Abstract In order to im prove the currency and security of fire detection and alarm system s，the manufactures of fire detection and alarm systems were discussed and the question about system design were analyzed．By using all sorts of the manufactures exist common quality in the way of net structure，design，disposal line，it is pointed out that the design of the currency of fire detection and alarm systems is essential．Put forward a new way of design，so as to it can adapt mainstream manufactures reasonable reliably，improve the security of the system ，content needs of architecture mark development．
