Abstract: According to the principle that sun altitude angle in different seasons changes with the latitude, the most proper angle between warm plastic livestock shed and horizontal plane was determined, which makes angle between sun incident position and surface of shed vertical at midday of the Great Cold Day(the coldest day in winter ). Thus, solar radiative heat can be effectively utilized to increase economic profits of raising cattle. The results of determining air temperature, relative humidity and air quality of a cattle shed and a sheep shed at north latitude of 46° show that air temperatures of cattle shed and sheep shed are 8.2℃ and 6.1℃, respectively, in average while the outside temperature is -24～-10℃ on the Great Day. Air quality meets the standard of sanitation, and the plastic warm shed plays a great role in resisting cold and defending snow disaster.