The invention discloses an environment-friendly and energy-saving factory building structure. The environment-friendly and energy-saving factory building structure comprises a factory building body, afactory building roof body, a convex lens, a solar cell panel, a first water collecting pool, a second water collecting pool, a first liquid pump, a second liquid pump, a water delivery pipe, a dustfall device, a water collecting hopper, a centralized water delivery pipe, a submersible pump, impurity filter nets, an air inlet, a heat collecting copper plate, fire hydrants, a tap water pool device and a ventilation window device. The dust fall device comprises an outer shell, a suction fan, limiting groove boxes, transverse branch pipes and spraying heads. The ventilation window device is mounted on the side wall, opposite to the air inlet, of the factory building body and comprises a limiting box, a sealing cover, a first limiting through hole, a dust filter net, a clamping groove, a buckle and a second limiting through hole. The environment-friendly and energy-saving factory building structure is good in energy-saving and environment-friendly effect, water resources can be recycled,solar energy can be reasonably utilized for electricity taking and heating, and the dust fall treatment effect is good.