The embodiment of the invention discloses a well condition change identification method based on pumping unit electrical parameters. The well condition change identification method comprises the following steps that S1, the electrical parameters of a certain pumping unit under normal well conditions are collected; S2, the electrical parameters of the certain pumping unit under real-time well conditions are collected; S3, the rate of change of the electric parameters of the pumping unit under the real-time well conditions compared with the electric parameters of the pumping unit under the normal well conditions is calculated; S4, the sum of the rate of change of the electric parameters multiplied by the influence coefficients of the rate of change of the electric parameters is calculated, and a characteristic value of well condition changes is obtained; and S5, the characteristic value of the well condition changes is compared with an identification constant of the well condition change, and whether the well condition has obvious changes or not is determined. A calculation method is simple, software implementation is convenient, the efficiency of well condition identification is high, the calculation time is short, the advantage of identification efficiency is achieved especially for large-scale mass well condition identification, abnormal changes of well conditions can be detected in time by observing the electrical parameters, the advantages of being simple and quick are achieved, the test workload of test workers is reduced, investment is small, and equipment is not prone to being damaged.