The MPPT technology is used a lot in the photovoltaic power generation system, but there are some shortcomings and deficiencies in practical application, such as tracking not fast enough and sometimes oscillation problems. Considering PV system exists to tracking slow and oscillating problems during MPPT, on the analysis of the perturbation and observation method and the hysteresis comparison method we proposes a new MPPT control method which combines the advantages of the two methods and makes the system control technology better. And by comparison with the traditional simulation of disturbance observation method, it verifies that the new method can track the maximum power point quickly, and when the sunshine, temperature changes can effectively reduce the oscillation at the maximum power point of the photovoltaic cell, and verify the correctness and validity of the method.