Method of server power supply protecting system

The invention provides a method of a server power supply protecting system, and belongs to a computer server technique. The server power supply protecting system comprises a server power supply and a CPU (central processing unit), wherein the inside of the server power supply is provided with a current detection circuit and a quick alarming circuit, and a buffer capacitor is arranged between the server power supply and the CPU. The method comprises the following specific system protecting step of preventing the overload faults of the power supply through the current detection of the power supply and the prejudging of a CPU frequency modulation mechanism. Compared with the prior art, the method of the server power supply protecting system has the advantages that the reliability of the server is effectively improved, and the application safety of a user is ensured.