Protected cultivation is an emerging technology for raise vegetables, flowers, and others high valued as well as perishable crops. In modern agriculture, protected structures held an extreme potential for more production with higher productivity. Quantity and quality of produce is also much better than open field produces.In protected production of vegetables and flowers or higher than open field conditions and productivity is also higher. Gross and net return where higher in the structures as compared to open conditions.. the initial cost of protected structures is higher but it is compensated in 3 to 5 years with a good production of crops. Hey. Off season vegetable cultivation. and nurseries or grown under protected structures to get higher profit from it. protected calculation has so much of advantages but there is some constraint also in these structures also in the structures. Little high cost and nonavailability of various material where are so the major constraints in the adoption of poly house technology..