Vehicle machine data interaction method and system, computer equipment and medium

The invention discloses a vehicle-mounted terminal data interaction method and system, computer equipment and a medium. After a vehicle-mounted terminal obtains a request message sent by a cloud end, the request message is directly sent to a control unit for response; a response message generated after the control unit responds is integrated into an ECU list, and the ECU list is uploaded to the cloud end. The cloud end does not need to store the ECU list; when the response state of the control unit needs to be acquired, only the response state of the control unit needs to be acquired once through the request message, then the ECU list is generated and uploaded to the cloud end, and therefore decoupling operation between the cloud end and the vehicle machine is achieved. The problem that in the prior art, when the cloud side obtains the response state of the control unit, the ECU list stored in the cloud side needs to be modified and updated, decoupling interaction cannot be actually achieved for data interact