A control strategy for a continuously variable valve lift mechanism , wherein the continuously variable valve lift mechanism comprises an eccentric shaft , a roller assembly and an intermediate swing arm ; the eccentric shaft is fixedly connected with an eccentric wheel, and when the eccentric shaft rotates, the eccentric wheel of the eccentric shaft drives the roller assembly to change a contact point between the roller assembly and a roller of the intermediate swing arm, thereby regulating a lift and an opening duration of a valve ; two valves of the continuously variable valve lift mechanism for the same cylinder correspond to eccentric wheels with different profiles, and the control strategy comprises: after the engine is energized, the continuously variable valve lift mechanism self learning to determine a current position; if the self learning is successful, the continuously variable valve lift mechanism being located at a maximum lift position, preparing for starting the engine, and determining a regulating mode based on a starting temperature, wherein at the time of a normal temperature start, regulation is performed from the maximum lift position to a minimum lift position, and at the time of a low temperature start, regulation is performed from the maximum lift position to a position where the two valves for the same cylinder have a maximum lift difference; if the self learning fails, entering a preliminary start mode; entering a CVVL control mode based on an operation condition of the engine; and powering off the engine, wherein the step of the continuously variable valve lift mechanism beginning the self learning to determine the current position comprises: sending an instruction by a control unit to move from an initial position to the minimum lift position and then to the maximum lift position; and wherein the preliminary start mode comprises: detecting a position of the eccentric shaft; calculating a current lift value by the control unit; and starting the engine in conjunction with an opening of a throttle valve corresponding to the lift value. after the engine is energized, the continuously variable valve lift mechanism self learning to determine a current position; if the self learning is successful, the continuously variable valve lift mechanism being located at a maximum lift position, preparing for starting the engine, and determining a regulating mode based on a starting temperature, wherein at the time of a normal temperature start, regulation is performed from the maximum lift position to a minimum lift position, and at the time of a low temperature start, regulation is performed from the maximum lift position to a position where the two valves for the same cylinder have a maximum lift difference; if the self learning fails, entering a preliminary start mode; entering a CVVL control mode based on an operation condition of the engine; and powering off the engine, wherein the step of the continuously variable valve lift mechanism beginning the self learning to determine the current position comprises: sending an instruction by a control unit to move from an initial position to the minimum lift position and then to the maximum lift position; and wherein the preliminary start mode comprises: detecting a position of the eccentric shaft; calculating a current lift value by the control unit; and starting the engine in conjunction with an opening of a throttle valve corresponding to the lift value. sending an instruction by a control unit to move from an initial position to the minimum lift position and then to the maximum lift position; and wherein the preliminary start mode comprises: detecting a position of the eccentric shaft; calculating a current lift value by the control unit; and starting the engine in conjunction with an opening of a throttle valve corresponding to the lift value. <EOS>