The invention discloses a voice timing operation method, device and system. The method comprises obtaining voice command information input by a user, converting the voice command information into character command information, identifying whether a number exists in the character command information, generating an operation command and a timing command according to the character command information when the number exists, and executing related operation according to the operation command and the timing command. Timing operation is achieved through voice, a key input is not needed, the complex degree of operation is reduced, and the user can achieve timing operation for various equipment simply, conveniently and rapidly.