In the manufacturing process of aviation composite parts, autoclave is the key equipment, which needs to accept composite preforms from other lay-up sections, and then pack into autoclave according the equipment area, resources, number of parts, process parameters, process constraints and tooling equipment and so on. In order to improve the production scheduling efficiency of autoclave, considering the characteristics of multi variety, small batch and multi factor constrains of composite parts, a method for production plan of autoclave based on multifactor constrain in composite forming manufacturing is proposed, which is successfully applied to a composite parts manufacturing enterprise. Through the actual production data verification, the scheduling method based on multifactor constrains can not only realize the guidance of production, but also improve the scheduling efficiency.