Building sound insulation and heat preservation wall structure

The utility model discloses a building sound insulation and heat preservation wall structure which comprises an outer frame plate and a heat preservation mechanism. The number of the outer frame plates is two, frameworks are arranged in the two outer frame plates, wallboards are arranged on the outer side faces, away from each other, of the two frameworks, and the two wallboards are located in the outer frame plates on the same side; the heat preservation mechanism comprises heat preservation plates, the heat preservation plates are symmetrically arranged in the two frameworks, the heat preservation mechanism further comprises a plastic partition frame, the outer side face of the plastic partition frame is fixedly connected with the inner walls of the two outer frame plates, and the plastic partition frame is located between the two frameworks; according to the building sound insulation and heat preservation wall structure, the two wallboards can be separated, transfer of heat on the two sides of the wall is