About temporary house of disaster, bad residential environment was reported by many interview researches. This paper describes year-round physical residential environment research about earthquake temporary house in Sakae village Nagano prefecture. In summer, it has bad ventilation, and hot air pools in temporary house at night. In winter, surface temperature is low at ceiling and finestra, as weakness of thermal insulation. Capacity of exhaust fan comes short, and then condensation is confirmed. Because of majority of inhabitants fails information about air conditioning and ventilation, residential environment degenerate. The necessity of guidance about resident method is checked out.