The invention relates to application of rubber seed oil to sturgeon compound feed and a formula of the rubber seed oil, and belongs to the technical field of aquaculture. The rubber seed oil is substituted for soybean oil partially to be added into the sturgeon compound feed. The compound feed comprises, by weight, 12-16% of fish meal, 18-22% of bean pulp, 12-17% of rapeseed dregs, 13-18% of cottonseed meal, 5-8% of corn gluten meal, 10-14% of rice bran, 0-5.5% of the soybean oil, 2.7-8.2% of the rubber seed oil, 0.3-0.5% of soya bean lecithin, 0.8-1.2% of monocalcium phosphate, 0.02-0.05% of vitamin C phosphate, 0.1-0.3% of choline chloride ,0.01-0.03% of ethoxyquin, 0.5-1.0% of mineral substance premix and 0.5-1.0% of vitamin premix. The sum of weight percentages of all raw materials is 100%. The application of the rubber seed oil to the sturgeon compound feed and the formula of the rubber seed oil have the advantages that the rubber seed oil is fully utilized to serve as a fat source in the sturgeon compound feed, the soybean oil as feed grease in short supply is saved, and the compound feed has no bad influence on sturgeon; formula cost and feed factors are reduced, high cost performance is achieved, and culture benefit of the sturgeon is improved.