The invention relates to a lubricating oil pressure checking device, which comprises a pressure supply oil storage unit, a pressure control unit and a transition unit which are sequentially connected. The pressure supply oil storage unit includes a fuel tank and a pressure supply element connected to the fuel tank through a pipeline. The pressure control unit comprises a control panel, wherein the control panel is provided with a pressurizing element for boosting pressure and an indicating element for displaying pressure, one end of the pressurizing element is connected with the pressure supply element through a pipeline, the other end of the pressurizing element is connected to the transition unit through a pipeline, and the indicating member is arranged on a pipeline connecting the pressurizing unit and the transition unit. The checking device provided by the invention has the advantages of simple result and convenient operation, can check the pressure sensors and flying parameters of the lubricating oil passage of various aircraft engines, can ensure the safety of the mechanical parts and can also be used for checking various non-banning oil pressure gauges.