With the development of optical precision manufacturing technology，aspheric optical components are widely used in various optical systems.Therefore,high-precision aspheric surface measurement technology is of great significance to aspheric optics manufacture.This paper introduces the aspheric surface testing technique based on interference method.According to the principle of measurement,the null testing and the non-null testing are introduced in detail.Then it summarizes the current situation and the development trend of aspheric testing technology.