A control method for a door lock of a washing machine, applied to a self-service washing machine, characterized in that, the method comprises: obtaining, by an authorizing end, a verification code, and sending, by the authorizing end, the verification code to an authorized end; verifying, by the authorized end, the verification code; and sending verification success information to a server when the verification succeeds, so that the server sends an unlocking control instruction to the washing machine; or returning, by the server, an unlocking control instruction to the authorized end after receiving verified information, and controlling the door lock of the washing machine by using the authorized end, wherein the obtaining, by the authorizing end, a verification code comprises: requesting, by the authorizing end, the verification code from the server, so that the server receives the request of the authorizing end and returns the verification code to the authorizing end, wherein the controlling the door lock of the washing machine by using the authorized end comprises: controlling, by the authorized end, the door lock of the washing machine through radio communication or voice, wherein the authorizing end and the authorized end are two clients, which are a mobile terminal, a tablet computer, an intelligent terminal or a personal computer, so that others can be authorized to control the door lock of the washing machine in a self-service laundry, so that when it is inconvenient for a user to get back clothes in time, the user authorizes others to get back the clothes. obtaining, by an authorizing end, a verification code, and sending, by the authorizing end, the verification code to an authorized end; verifying, by the authorized end, the verification code; and sending verification success information to a server when the verification succeeds, so that the server sends an unlocking control instruction to the washing machine; or returning, by the server, an unlocking control instruction to the authorized end after receiving verified information, and controlling the door lock of the washing machine by using the authorized end, wherein the obtaining, by the authorizing end, a verification code comprises: requesting, by the authorizing end, the verification code from the server, so that the server receives the request of the authorizing end and returns the verification code to the authorizing end, wherein the controlling the door lock of the washing machine by using the authorized end comprises: controlling, by the authorized end, the door lock of the washing machine through radio communication or voice, wherein the authorizing end and the authorized end are two clients, which are a mobile terminal, a tablet computer, an intelligent terminal or a personal computer, so that others can be authorized to control the door lock of the washing machine in a self-service laundry, so that when it is inconvenient for a user to get back clothes in time, the user authorizes others to get back the clothes. requesting, by the authorizing end, the verification code from the server, so that the server receives the request of the authorizing end and returns the verification code to the authorizing end, wherein the controlling the door lock of the washing machine by using the authorized end comprises: controlling, by the authorized end, the door lock of the washing machine through radio communication or voice, wherein the authorizing end and the authorized end are two clients, which are a mobile terminal, a tablet computer, an intelligent terminal or a personal computer, so that others can be authorized to control the door lock of the washing machine in a self-service laundry, so that when it is inconvenient for a user to get back clothes in time, the user authorizes others to get back the clothes.