Capacity requirements planning is an important subsystem in enterprise resource planning. Itprovidestheassuranceofcapacity for production, and connects the production with planning. This paper firstly analyzes the current algorithm of capacity requirements planning in enterprise resource planning, finds out the existent problems of current algorithm of capacity requirements planning in flexible aspects and does a research on existent problems. It solves multi-route problem and presents lack of lead time planning aimed at the problem of lack of lead time in the process of calculation. Capacity ...