The invention discloses an emergency demand response combined regulation method for central air conditioning and data center load. With the goal of maximizing social welfare, the method adopts the wayof regulating the terminal temperature of the central air conditioner and regulating the startup and shutdown of the data center server, reduces the power of central air-conditioning and data centerin office building, and under the constraint of indoor temperature comfort and data network load response time, realizes the response of emergency demand response to load reduction signal, which provides a reference for the flexible combined control of multiple resources in emergency demand response scenario, and has a good application prospect.