The invention mainly relates to the field of wood treatment, and discloses a mould-proof and moth-proof treatment method for poplar. The method includes the steps of heating
steaming,
freeze drying, soaking for sterilization and heating curing. The method is simple, no harmful chemical components are contained, the bacteriostasis rate of the poplar is made to reach 76.3%, storage and usage are facilitated, the service life is prolonged by 16.2%, losses caused by
mildew and damage by worms are reduced, and the
economic income is increased by 7.6%. The poplar is placed into steam for
steaming, a flash high temperature is obtained to kill infectious microbes inside the poplar and on the surface of the poplar, and the phenomenon of
mildew and damage by worms can be restrained; and meanwhile, the temperature is lowered gradually after the flash high temperature, the filter structure can be loosened, softness of the poplar is improved, and the
cracking phenomenon is reduced. The poplar is subjected to
freeze drying, the dense air pore structure inside the poplar is added, the
air content is increased,
moisture missing is facilitated, and mould growth is inhibited; and meanwhile, due to the dense air pore structure, the deformation degree of the poplar can be raised, the softness is improved, the
brittleness is lowered, and
cracking and deformation are reduced.