The invention discloses an IT asset management method based on a block chain. The invention solves the problem of decentralized accounting and unified server storage by building an economic system centered on competition-bookkeeping-reward. The IT asset management system builds a forward circulation economic system by means of a block chain, so that the IT asset management system naturally grows and develops and expands under the condition that no powerful centralization mechanism or organization promotion exists. The method is applicable to owned management organizations; Hardware, software and information assets which can play a value for organizing services are also suitable for management of the whole process including but not limited to IT asset demand proposing, type selection, fundbudget and preparation, purchasing, contract, registration and entry, installation, use, asset accident management, problem management, maintenance, upgrade, change, migration, transfer, spare part management, scrapping and the like.