| It is proved that no efficiency, no equity. People are not making a choice between the perfect market and the faulty government, nor between the faulty market and the perfect government. As a matter of fact, people have no choice but to select a combination of faulty market and faulty government. To keep a balance between efficiency and equity, the combination consists of better advantage and lesser disadvantage of market and government. We have to research factors those prevent market mechanism from running well in health service area if we want to make use of it. Uncertainty is the most important nature of health service market, so it is helpful to improve the market efficiency studying on the uncertain factors which constrain market mechanism.This article probes into the origin of risk on market-orientation of the health service, including Information Asymmetry and Third Party Payment. Moral Hazard of supplier as well as patients and so on is raised by Information Asymmetry, which is the basic problem of health service market. Third Party Payment stimulates the demand of health service because. There is no way to get rid of Information Asymmetry and Third Party Payment, consequently, risk of market-orientation of health service will never disappear.This article analyzes the reason of high risk of health service market in China on the basis of study on existing risk. China introduced a lot of market mechanism to health service area without risk management system.The risk of market-orientation on health system is the uncertain factors constrict market mechanism. The reasons of high risk including Non-price competition, supplier-induced demand, price decided by supplier and so on. The reasons causing high risk including low coverage of social health insurance, medicine profit to make up medical cost, the lack of heath institution grade system, unfair competition environment and weak third party. Risk is uncertain, but reason of high risk is certain. As a result, the key to control risks is policy on the basic of risk origin. On the ground of risk analyzing and experience summary, this article come up with a project to construct a risk control system in China. Through which supplier, patient and purchaser could work together under government s supervision to control medical care costs with good outcome. |