The invention discloses ternary compound flowable concentrate for seed coating. The ternary compound flowable concentrate for seed coating comprises water and any three of the following raw materials including tebuconazole, thiamethoxam, imidacloprid, lufenuron, nitenpyram, chlorantraniliprole, dinotefuran and azoxystrobin; specifically, the raw materials comprises that, by mass, the tebuconazole is greater than 0 and less than or equal to 30%, the thiamethoxam is greater than 0 and less than or equal to 25%, the imidacloprid is greater than 0 and less than or equal to 30%, the lufenuron is greater than 0 and less than or equal to 25%, the nitenpyram is greater than 0 and less than or equal to 25%, the chlorantraniliprole is greater than 0 and less than or equal to 25%, the dinotefuran is greater than 0 and less than or equal to 15%, and the azoxystrobin is greater than 0 and less than or equal to 25%; and the balance is complemented by the water. According to the ternary compound flowable concentrate for seed coating, any three of the tebuconazole, the thiamethoxam, the imidacloprid, the lufenuron, the nitenpyram, the chlorantraniliprole, the dinotefuran and the azoxystrobin are subjected to compounding and have complementary advantages, and the insecticidal purpose can be achieved through one-time pesticide application; and the ternary compound flowable concentrate for seed coating does not directly act on plants and is free of residues on the plants or is low in residue amount, the pesticide using amount is greatly decreased, a good control effect on pests during the rice seeding stage is achieved, the time and effort are saved, and the persistent period is long.