Hydraulic brake leakage detection method and device based on ESC

The invention discloses a hydraulic brake leakage detection method and device based on ESC, after a whole vehicle is powered on and/or stopped, brake pressure is applied to each brake loop of an ESC hydraulic regulator, the pressure is maintained for a period of time, and whether the brake loops leak or not is judged by detecting the pressure drop of each brake loop. One pressure limiting valve and two pressure increasing valves are arranged in each loop, are two-position two-way normally-open electromagnetic valves, and are closed after being electrified; and the suction valve and the two pressure reducing valves are two-position two-way normally-closed electromagnetic valves and are opened after being electrified. An automatic detection link is added before starting and after stopping, a mode of directly and automatically detecting pressure drop is adopted, the leakage condition can be objectively, directly and timely obtained, leakage existing in a pipeline is timely found, a driver is prompted to conduct