Disclosed is a vein verification device based on a computer comprising a verification machine body, the verification machine body comprises a machine base and an upper lamp holder, the upper lamp holder is vertically welded to the top face of the machine base, a finger groove is vertically formed in the top face of the machine base, and light source lamps are installed at the bottom end of the upper lamp holder and in the finger groove of the machine base; a perspective plate is horizontally bonded to the top end of the finger groove of the machine base, a clamping frame base is installed at the bottom of the machine base, an inserting groove opening is formed in the rear end face of the machine base, a connecting wire is inserted into the inserting groove opening, supporting structures are symmetrically and vertically arranged on the two sides of the clamping frame base, protection structures are installed on the supporting structures, and an electromechanical box is horizontally connected to the front end face of the clamping frame base. Two-way light source irradiation can be conducted on finger veins, so that the shooting definition of the finger veins is improved, later connection with a computer is facilitated, the use convenience is improved, the use height can be adjusted according to use requirements, the use flexibility is good, the device is protected, damage is reduced, and the service life is prolonged.