| Previous international studies on the response to marine oil spill were systematically commentated in this paper in which some existed problems were pointed out and numbers of related methods and models were detailed introduced. Furthermore, the decision support system for oil spill emergency on offshore platform in Bohai named OSCOP-DSS was developed integrating the two techniques of GIS and Decision Support and adopting the achievements of other subordinate subjects in connection with the practical demand of the response to oil spill emergency on offshore platform of Bohai. Additionally, the functions of this system were demonstrated with the emulated data of the oil drilling platform of Bozhong 26-2.The main content of this study includes six parts as follows:(1) Summarized the international studies of current conditions on the response to oil spill emergency on offshore platform and indicated their limitations, and designed the general framework and functional requirement of the decision support system for oil emergency in offshore platform of Bohai, which constructed according to the achievements of scientific research projects in progress and the physical circumstances of Bohai, based on the combination techniques both of Geographical Information System (GIS) and Decision Support System (DSS).(2) Constructed the Strategy Decision Model for the removal and recycling of spilled oil in offshore on basis of production knowledge rule combining the structure and characteristics of expert system through the practical problem analysis of the removal and recycling of spilled oil. Particularly, introducing the artificial intelligence mean into the response to oil spill emergency, constructed the expert system directing towards the process decision on removal and recycling of spilled oil offshore, further studied the construction of knowledge base, realization of processor, information acquisition and so on, and put the emphases on the aspects such as types and expression of knowledge, structure design of knowledge, the realization of processor.(3) Studied the optimizing allocateandtransport of emergency supplies in limited conditions using Fuzzy Optimization Method and Ideal Point Method and proposed the optimizing allocateandtransport model of emergency supplies for offshore oil spill, following the guidance of system science and combining number of subjects such as applied transportation science, operational science, and geographical information system. This applied model was characterized by two patterns of single resource transport and multi resource transport both of which had the two emergency objects of the shortest beginning time for emergency and the best system stability, which could provide the aid decisions for emergency personnel, improve the emergency efficiency, and reduce the costs of supply allocateandtransport.(4) Put forward the dynamic damage model for the offshore oil spill against the practical needs for the oil spill emergency due to the enormous damage of the marine oil spill accidents to the marine ecology environment, which was mainly on assessing the damage caused by oil spill. Comprehending the current achievements on the ecology damage of marine oil spill, the corresponding disaster loss evaluation formulas were constructed to realize the functions of loss evaluations on marine environment capability, marine ecology service and natural fishing.(5) Established the pollution level assessment model for oil spill on offshore platforms through the application of analytic hierarchy process into the discrimination on the contamination degree of offshore oil spill. In detail, the corresponding oil spill parameters were selected to construct the risk hierarchical structure of oil spill pollutions which determined the corresponding object layer, criterion layer and program layer, and defined the membership grade of each parameter, finally, set up the total sort table of risk level assessment for the oil spill contamination on oil platform of Bohai. In this paper, five levels were classified for the pollution risk of oil spill and each level corresponded to a certain numerical range, and the pollution level was determined through the corresponding value calculated by the model.(6) Pointed out the advantage of the application of SDSS technique in the field of oil spill emergency by comparing the development and characteristics of the techniques of GIS, DSS and SDSS, and established the decision support system of oil spill emergency on oil platform of Bohai named OSCOP-DSS adopting C# language and ArcGIS Engine 9.2 with Visual studio.NET as the platform and the MSSOL Server of SOL Server 2005 as the basis, together with the research and development achievements of four decision-support models. In addition, the development requirement, design object and principle, system framework, development application platform and database management platform of the OSCOP-DSS were detailed described in this paper, along with the structure and function design of the six main modules of OSCOP-DSS. Finally, the functions of this system were demonstrated with the emulated data of the oil drilling platform of Bozhong 26-2.Three innovation points can be found in this paper, which was illustrated below:(1) Basing on the current situation of oil spill emergency on oil platform in Bohai, first designed the appropriate decision support system framework and functions for oil spill emergency on the Bohai oil platform combining with the system structure of SDSS, countering the detailed problems in the decision support system of oil spill emergency on oil platform and at the basis of analysis of practical requirements in oil spill emergency response.(2) Realized the organic integration between GIS and DSS, and designed four decision support models of Spilled Oil Removal and Recycling Strategy Model, Emergency Supplies Optimizing Allocateandtransport Model, Spilled Oil pollution Dynamic Risk Model, and Spilled Oil Pollution Level Assessment Model, which was of great practical significance to the disaster prevention and control of oil spill on Bohai oil platform.(3) Independently developed the decision support system of oil spill on Bohai oil platform named OSCOP-DSS basing on the framework and functions of oil spill emergency decision support system combined with ArcGIS Engine9.2, Visual Studio.NET platform and SQL Server 2005 database after sufficiently understood the practical requirements of the response to oil spill emergency on Bohai oil platform.
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