Intelligent manufacturing is the focus of global attention. The planning and scheduling method of manufacturing big data has become an important factor restricting the development of the manufacturing industry, and its intelligent research has become highlight. Facing the manufacturing big data of small and medium-sized enterprises, under the complex scenario of multi task, multi time-space interleaving and multi constraints, taking the actual manufacturing enterprise data as an example, the multi task intelligent production scheduling method and production part disassembly method based on time series are studied in the paper. It includes intelligent scheduling algorithm based on project and production constraints and production part distribution algorithm based on temporal and spatial characteristics, which are conducive to small and medium-sized manufacturing enterprises to make full use of existing resources and improve speed, efficiency and quality.