The invention discloses a wireless charging device authentication method. The method includes the following steps that an authentication response which is forwarded by a visiting operator server and generated by a belonging operator server according to identity authentication is received, wherein the authentication response carries business session identification; according to the authentication response and the business session identification, a business request is generated and sent to the visiting operator server; a business response which is generated by the visiting operator server according to the business authentication response sent by the belonging operator server is obtained to authenticate the business request, wherein the business authentication response is generated by the belonging operator server according to the business authentication request generated and sent by the visiting operator server according to the business request. The invention further discloses a wireless charging device authentication device and a charging server authentication method and device. By means of the technical scheme, trans-operator safe charging of vehicles can be achieved.