The invention provides a valve assembly and an electromagnetic valve. The valve assembly comprises a valve sleeve and a valve element assembly; the valve sleeve is provided with an internal space which is formed in the extending direction of the valve sleeve, and an input port, an output port and a control port which communicate with the internal space are formed in the surface of the valve sleeve; the valve element assembly is arranged in the internal space, a step-shaped blind hole is formed in the position, close to one end of the valve element assembly, of the valve element assembly in theextending direction, and the blind hole comprises a connecting part close to the opening of the blind hole and a circulating part far away from the opening of the blind hole; the connecting part is arranged on a fixing unit in a sleeving mode, the other end of the valve element assembly is used for being connected with a power unit so that the valve element assembly can move in the extending direction relative to the fixing unit, and all the ports can be connected or disconnected when the valve element assembly moves; a communicating hole is further formed in the valve element assembly, and the communicating hole makes the circulating part and the control port communicate. An internal feedback oil path is adopted, so that the possibility of high-pressure oil leakage is greatly reduced, and the efficiency of the whole hydraulic system comprising the valve assembly is improved.