Abstract: A method for adaptation, an adapter and adapter system for the network service communication are provided in the present invention. Said method includes: transforming a network service request received from a first entity into a network service request comprehended by a second entity; sending the transformed network service request to the second entity; receiving a returned network service response responded by the second entity for said network service request; transforming the received network service response into a network service response comprehended by the first entity; returning the transformed network service response to the first entity. A client application system can send a network service request in its own format, a network service request corresponding to a third party system is not needed, and the repeated compiling of such network service code is avoided.