There are many technical means to realize electronic signature. If users only use this function, it is a good choice to directly use the services provided by the third-party electronic signature platform. The third-party electronic signature technology has the following technologies, which can lock the real identity of the signature subject, effectively prevent document tampering and accurately record the signature time. Realize the combination of human resource management system and third-party signature platform, and better serve human resource management. Like the Red Sea eHR that our company is using, it cooperates with the third-party electronic signature platform.