The invention discloses a system and method for managing pattern data in computer, comprising following steps: preloading a first batch of multiple pattern description symbols from a storing position of a first buffer in a first logic module to response for a read request, wherein the first buffer is used for receiving data in the first logic block; preloading the first batch of multiple pattern description symbols to a second buffer in a second logic module from the storing position; executing a coloring calculation via using the first batch of multiple pattern description symbols in the second logic module; dynamically loading a second batch of multiple pattern symbols to the first buffer from the storage, in order to response for extra data required by the first logic module; using thesecond batch of multiple pattern symbols to re-write a part of the first batch of multiple pattern description symbols, in order to response that the first buffer is full. The invention can reduce system redundant and costs, update pattern process and improve operation.