The invention discloses a verification method for an equalization effect of a battery equalization system, which comprises the steps of S1, testing change data of battery core SOC distribution in a battery pack when the equalization system is started; S2, testing change data of the battery core SOC distribution in the battery pack when the equalization system is out of service; S3, comparing the data acquired in the step S1 and the data acquired in the step S2, and determining a result, the speed and the cost performance of the equalization system. Determination for the equalization effect refers that if the battery core SOC distribution after the equalization system is started is more centralized than the battery core SOC distribution under the condition that the equalization system is not started, it is indicated that the equalization system has an effect. Judgment for the speed of the equalization system comprises the time when the battery core SOC distribution reaches a design objective after the equalization system is started, the time when the SOC distribution exceeds a range set by the equalization system after the equalization system goes out of service, and the time when the SOC distribution reaches the design objective after the equalization system is started again. According to the verification method disclosed by the invention, technical indexes of the equalization system can be judged concisely, no equipment or components are required to be increased, and the result is accurate, reliable and practical.