A chassis simulation method for testing an automatic driving unit, applied to a server, wherein a virtual chassis is implemented by the server, the server is connected to the automatic driving unit via a hardware interface, and the method comprises: acquiring a chassis control message transmitted from the automatic driving unit, and acquiring fault injection information; generating simulation information of a chassis status corresponding to the chassis control message according to the chassis control message and the fault injection information; and transmitting the simulation information of the chassis status to the automatic driving unit; wherein the generating the simulation information of the chassis status corresponding to the chassis control message according to the chassis control message and the fault injection information comprise: performing, according to the fault injection information, a fault injection on the chassis control message and/or a chassis simulation result corresponding to the chassis control message to obtain the simulation information of the chassis status, wherein the chassis simulation result is determined according to the chassis control message and a vehicle dynamic model; wherein performing the fault injection on the chassis control message and/or the chassis simulation result corresponding to the chassis control message comprises: modifying content of a first target field of the chassis control message and/or a second target field of the chassis simulation result corresponding to the chassis control message, according to different configured fault injection strategies. acquiring a chassis control message transmitted from the automatic driving unit, and acquiring fault injection information; generating simulation information of a chassis status corresponding to the chassis control message according to the chassis control message and the fault injection information; and transmitting the simulation information of the chassis status to the automatic driving unit; wherein the generating the simulation information of the chassis status corresponding to the chassis control message according to the chassis control message and the fault injection information comprise: performing, according to the fault injection information, a fault injection on the chassis control message and/or a chassis simulation result corresponding to the chassis control message to obtain the simulation information of the chassis status, wherein the chassis simulation result is determined according to the chassis control message and a vehicle dynamic model; wherein performing the fault injection on the chassis control message and/or the chassis simulation result corresponding to the chassis control message comprises: modifying content of a first target field of the chassis control message and/or a second target field of the chassis simulation result corresponding to the chassis control message, according to different configured fault injection strategies. performing, according to the fault injection information, a fault injection on the chassis control message and/or a chassis simulation result corresponding to the chassis control message to obtain the simulation information of the chassis status, wherein the chassis simulation result is determined according to the chassis control message and a vehicle dynamic model; wherein performing the fault injection on the chassis control message and/or the chassis simulation result corresponding to the chassis control message comprises: modifying content of a first target field of the chassis control message and/or a second target field of the chassis simulation result corresponding to the chassis control message, according to different configured fault injection strategies.