The present invention discloses a self-learning method of a half-joint point value of a cut-off clutch of a hybrid vehicle. The self-learning method comprises the steps of setting a motor torque value when cut-off clutch pressure reaches a half-joint point and expected pressure of pre-charged oil, and determining whether the demand is satisfied by actual pressure of the clutch following the expected pressure; increasing the clutch pressure according to a set step; continuously increasing the motor torque; detecting whether the motor torque reaches the set half-joint point torque value, if so, using the current clutch pressure as a new half-joint point pressure value, and if not, continuing self-learning within the limitation of specified duration and frequency; and detecting the obtained new half-joint point pressure value, and removing wrong half-joint point pressure values obtained by self-learning. To solve the problem that half-joint point pressure is changed due to cut-off clutch abrasion and manufacture inconsistency factors, the method of self-learning and adjusting the half-joint point pressure value is provided, and dynamic performance and comfortableness of driving the hybrid vehicle are improved.