The invention discloses a production process control method of a top-bottom compound blowing converter by using a LSTM system. The production process control method comprises the following steps thatdata collecting is conducted on three stages of the blowing mode confirming stage, the main blowing stage and the reblowing stage; collected data are filtered and preprocessed and serves as a trainingset, and a defined production process control model of the top-bottom compound blowing converter based on LSTM is trained by using the training set; and in the blowing mode confirming stage of actualsteelmaking production, a main blowing mode is determined by using the trained model, a main blowing terminal point is predicted by using the trained model, and a reblowing terminal point is predicted by using the trained model. By means of the production process control method, joint model establishing can be conducted on the three stages of steelmaking production of the top-bottom compound blowing converter, the problem of relative coupling of the data among all the stages in the steelmaking production of the top-bottom compound blowing converter is solved effectively, and the production process control method is intuitive, practical and good in generality, and can remarkably improve the hit rate of the blowing terminal points and the qualified ratio of tapping.