Evidence such as the inconsistency between the signature and seal of the honorary certificate and the inconsistency between the title of the contract and the subject of the seal shall be sealed by the responsible unit according to the contract alone. The management of the company's traditional seal needs to establish a daily storage system, which must be kept by a special person and set up post responsibilities. It is inconvenient to carry out and there is a risk of theft and loss. With the development of science and technology, intelligent seal appeared, which solved the difficult problem of company seal management. Zhang Guanjia's smart seal system uses Internet of Things and mobile Internet technology to add a smart lock to the traditional seal, which becomes a portable smart seal. The seal can be controlled before use, monitored during use and traceable after use, which helps enterprises to effectively solve the problem of preventing the official seal from being privately engraved and achieve the purpose of controlling business risks.