Hydraulic mount, hydraulic mount assembly, control method, control unit, ECU and automobile

The invention discloses a hydraulic mount, a hydraulic mount assembly, a control method, a control unit, an ECU and an automobile. The hydraulic mount comprises a casing with an inner cavity and a rubber main spring positioned in the inner cavity, wherein the rubber main spring is used for being connected with an engine; the casing is used for being connected with an automobile body; the rubber main spring and the bottom wall of the casing define a hydraulic chamber; the hydraulic chamber is filled with liquid and communicates with the outside through an opening in the chamber wall; the liquid can flow to the outside through the opening; and external liquid can flow towards the hydraulic chamber through the opening. When the rigidity of the hydraulic mount needs to be reduced, the liquid can flow to the outside through the opening in the chamber wall, and the rigidity of the hydraulic mount is reduced; and when the rigidity of the hydraulic mount needs to be increased, the liquid flows to the hydraulic chamber through the opening in the chamber wall, the rigidity of the hydraulic mount is increased, and the adjustment of the rigidity of the hydraulic mount can be realized.