The invention discloses automatic syrup filling equipment for preparing cough syrup. The automatic syrup filling equipment comprises supporting stand columns which are arranged in parallel, fixes bases are arranged at the bottoms of the supporting stand columns, a supporting cross rod is arranged between the two supporting stand columns, vertical guide rods are arranged in the support stand columns, guide sliding grooves are formed in the inner sides of the support stand columns, air cylinders are arranged on the supporting stand columns, the two ends of the supporting cross rod extend into the guide sliding grooves, pistons of the air cylinders are connected with the supporting cross rod, a filling assembly is connected below the supporting cross rod, a filling table is arranged below thefilling assembly, a plurality of containing boxes used for containing cough syrup tank bodies are arranged on the upper surface of the filling table, and the bottom of the filling table is arranged on a sliding base. According to the automatic syrup filling equipment, the mechanical equipment is adopted for automatic filling, so that the time and the physical strength of workers are saved, and the working efficiency and the yield of workers are improved.