| With the development of material science, magnesium alloys have great advantages in more and more field. Magnesium alloys are applied in various industries, such as the manufacturing of planes and mobile phones. However, the production of magnesium alloy sheets has a considerable difficults. When using two-roll thin strip continuous casting produce magnesium alloys, that would be better to solve the shortcomings of traditional technology. In the twin-roll thin strip continuous casting process, metal delivery system have a crucial effect with quality of thin strip, therefore, it is a great significance to research metal delivery system of twin-roll thin strip continuous casting pool.In this paper, using physical and numerical simulation method research metal delivery system of twin-roll thin strip continuous casting pool. Based on similar principles, established a 1:1 water model, and using an ultrasonic level detector and a conductometer measurement, study was performed about the influence of lateral hole, side hole aperture and the length of distribution device straight pipe and other parameters on level fluctuation and fluid mixed of the upper pool region; and in accordance with level fluctuation and fluid mixed of the upper pool region conditions to choose optimization metal delivery system. In addition, using numerical simulation method investigate the flow field and velocity field of liquid Level, pool section, pool symmetrical face, pool vertical 1/4 section and side hole section of several optimum metal delivery system, so as to supplemented and verified the physical simulation results.Physical simulation results indicating metal delivery system with lateral hole, the pool was mixed better, at the same time level fluctuation also larger; side hole of cylindraceous metal delivery system was larger, level fluctuation and fluid mixed of the upper pool region was relatively weaker; The length of distribution device of sulciform metal delivery system changed from 55mm into 45mm, level fluctuation disturbance decreases; at the same time, choosed the optimum metal delivery system according to level fluctuation and fluid mixed of the upper pool region, shape cylindraceous,13mm diameter side hole, side hole in the cylinder of 1/2,and has lateral hole was the optimum metal delivery system. Based on numerical simulation indicates pool of the optimum cylindraceous metal delivery system's flow field uniformity, temperature distribution reasonable; numerical simulation and physical simulation was in good coincidence.
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