The invention disclosesa hydraulic control valve and a hydraulic system. The hydraulic control valve comprises a working link, wherein the working link is provided with an oil inlet, a first working oil port, a second working oil port and an oil discharging port and comprises an oil inlet control valve, a main control valve and a pressure compensating valve, the oil inlet control valve delivers oil to the main control valve through the pressure compensating valve, the pressure compensating valve controls the pressure difference between a second oil port of the oil inlet control valve and a first oil port of the oil inlet control valve to be a set value. The hydraulic control valve can control the pressure difference between the second oil port of the oil inlet control valve and the first oil port of the oil inlet control valve to be the set value, so that output flow of the oil inlet control valve is not influenced by the pressure of the oil inlet of the working link, accordingly the stability of the output flow is improved, and he operating accuracy of a mainframe is improved.