Energy-saving passive house

The utility model discloses an energy-saving passive house which comprises a house body and a heat preservation mechanism arranged on the inner wall of the house body, and the heat preservation mechanism comprises a lifting assembly, a connecting assembly and an opening and closing assembly. The lifting assembly comprises a window body, a closed frame, a threaded rod, a rotary knob, a lifting sliding block and a limiting column, and the window body is arranged on the inner wall of the house body. Hot air in the house body is driven to be discharged out of the house body through a second turbine by working of an exchange plate and an air outlet fan in an air outlet pipe; an air inlet fan in the air inlet pipe works to drive cold air outside the house body to enter the house body through a first turbine, and through synchronous relative rotation of the first turbine and a second turbine, rapid exchange operation of air inside the house body is achieved; hot air in the air outlet pipe heats cold air in the air i