The invention discloses an auxiliary device for vibration wire type strainometer installation. The auxiliary device for the vibration wire type strainometer installation includes a concrete outer housing, a positioning chip and a gradienter are arranged on the concrete outer housing, a groove is formed in the middle of the concrete outer housing, a vibration wire type strainometer support is mounted in the groove through a horizontal inclination angle adjustment device and a vertical inclination angle adjustment device, convex ears are respectively arranged at the four corners of the upper part and the lower part of the concrete outer housing, and positioning holes are formed in the convex ears. 8 steel strands penetrate through the positioning holes, thus the auxiliary device is fixed inthe inner part of a to-be-tested structural steel reinforcement cage, the installation angle of a vibration wire type strainometer is adjusted through the horizontal inclination angle adjustment device and the vertical inclination angle adjustment device, the auxiliary device has the characteristic that installation is convenient, and the rate of survival and the installation precision of the vibration wire type strainometer can be effectively improved.