The invention relates to a method for recycling tartaric acid in tilmicosin production wastewater. The method comprises the following steps: (1) delivering the tilmicosin production wastewater containing sodium tartarate into a treatment kettle, slowly adding calcium chloride of which the molar ratio is 1 to (0.9 to 1.1) into the treatment kettle, stirring for 20 to 40 minutes, and carrying out plate frame filtering, thus obtaining calcium tartarate precipitate; (2) preparing and delivering a sulfuric acid solution of which the concentration is 2 to 4 percent to a reaction kettle, starting thereaction kettle for stirring, slowly putting calcium tartarate filtered and obtained in step (1) in the reaction kettle, reacting for 30 to 50 minutes under the situation that stirring is started, sampling, and controlling pH (Potential of Hydrogen) of a reaction solution to be 1.2 to 1.6 by regulating the adding amount of calcium tartarate; (3) carrying out the plate frame filtering on the reaction solution obtained in step (2), wherein filtrate (a tartaric acid solution) is used for production of tylosin tartarate. According to method disclosed by the invention, not only can the problem ofwastewater treatment during tilmicosin production be solved, but also the recycled tartaric acid can be used for preparing tylosin tartarate; the problem of environment protection is solved, meanwhile, the production cost of tylosin tartarate is also reduced, and the purposes of cyclic economy, comprehensive treatment as well as energy conservation and emission reduction are achieved.