This article introduces the design and construction process of demolishing the reinforced concrete elevator test tower with directional controlled blasting technology in complex environment， analyzes and summarizes the blasting results. In view of the characteristics of the shear wall structure of the elevator shaft， pre-demolition of the non-load-bearing shear wall， the column beam and part of the load-bearing shear wall was carried out to determine the proper blasting height， the cut form and the tilting angle； a proper half-second delay time was adopted to increase the structure material action time to ensure that the elevator test tower lose stability and collapsed as designed. The safety protection design was checked， and the surrounding environment and facilities were not affected after blasting， and the expected blasting demolition effect was achieved.