The invention discloses a mixed wall with a fixed connector, and relates to the technical field of building wall bodies. The mixed wall comprises a concrete wall, a steel plate wall, a wall connectingstructure, a shock absorption connecting structure, a fixed connecting piece, a drilling hole and a sound insulation cavity; and the right side of the concrete wall is provided with the steel plate wall, the two ends of the shock absorption connecting structure are respectively and fixedly connected with the concrete wall and the steel plate wall, the steel plate wall located at the position of the drilling hole is provided with the fixed connecting piece, and the sound insulation cavity is formed between the concrete wall and the steel plate wall. The mixed wall has the beneficial effects that the steel plate wall and the concrete wall form a mixed wall body, a cavity is formed in the wall body with the good sound insulation effect, and at the same time, the mixed wall has the advantagesof the steel plate wall and the concrete wall, the wall body is provided with the fixed connecting piece, convenient is brought, the connection is stable, and the effect of shock absorption is achieved simultaneously.