The invention belongs to the aquiculture field, in particular to an eutelegenesis method for improving the ovum fertilization rate of spotted halibut. The method is an eutelegenesis technology for sea fish spotted halibut ripe fish, which solves the problems that because the ovulatory cycle of the spotted halibut which is artificially raised is unstable, the inside of ovarian cavity is usually overripe, and among the artificially extruded ovum, the overripe ovum is often mixed with normal ovum, the fertilization rate of eutelegenesis is very low, and batch fertilized eggs are difficult to be obtained, etc. In the eutelegenesis method for improving the ovum fertilization rate of spotted halibut, the spotted halibut ovum is fertilized in high-salt seawater after being separated in the high-salt seawater. The method improves the fertilization rate of the spotted halibut ovum, obtains batch fertilized eggs, lays technical foundation for adding a novel aquaculture breed for the marine aquaculture industry of our country, and has significant meaning in developing the industrialization of spotted halibut.