For improving the extensibility and generality of automatic calibration system for digital multimeter,on the basis of the indepth study on the principles and functions of calibration instruments in the measurement calibration field, the verification regulation of digital multimeter is taken as the reference in the design of a set of digital verification system for multitype highprecision digital multimeter that is applicable to calibration. First of all, the basic condition of the verification system design is introduced. Next, the principles of the system composition, and the development of the software and hardware are elaborated specifically. It is suggested by experiments that this system is absolutely feasible. Moreover, with superior performance, better stability and reliability, this system which improves the capacity of digital multimeter verification is of great practical value.