According to one embodiment of the present disclosure, there is provided a vehicle diagnosis system equipped with a communication terminal for transmitting vehicle information acquired from a vehicle to a server, and a server for analyzing the vehicle information received from the communication terminal and diagnosing the vehicle. The server is provided with a WEB screen providing unit for providing a WEB screen including instructions for the operator in a manner that the communication terminal can display via a communication network. The communication terminal displays the provided WEB screen via the communication network.