Plastic shed fattening pigsty can be divided into single row and double row. Small-scale farming can be carried out in a single row, and the construction method is sitting in the east and west, and ridging in the north and south. At present, the price of steel is high, and roof rafters are generally used. Cement rafters are low in cost, firm and good in compression resistance. The back slope and front slope of the roof 1/3 adopt tile building; Two-thirds of the front slope is tied with bamboo poles and wooden sticks, covered with plastic film for lighting and heating, and covered with straw curtains for insulation at night. Single-layer plastic, double-layer grass curtain or double-layer plastic double-layer grass curtain can be used to keep warm in cold areas.

The construction methods of double-row pigsty are north-south, dome and roof. Judging from the current steel price, the cost of dome-shaped greenhouse piggery is higher than that of roof-type piggery, and its service life is not as good as that of roof-type piggery. At present, rooftop greenhouses are mostly built in production. The construction method is to use 12 cm single brick for the compartment load-bearing wall. In order to ventilate the house, it was built as a flower wall 1 m above the ground. The roof is a purlin truss structure, and the thickness of rake mud is increased to 4 ~ 5cm, which increases the effect of cooling in summer and keeping warm in winter. There is a space of 1.2m from both sides of the roof slope to the retaining wall, which is covered with plastic for lighting and heating. Generally, a single layer of plastic and a single layer of grass curtain can be used. However, single-layer plastic, double-layer grass curtain or double-layer plastic double-layer grass curtain can be used to keep warm in cold areas.