Using cold weather concrete, you should know that how to maintain curing temperatures for its initial curing is very important, because it can cause frost damage at the beginning. So they mostly apply heating-insulation curing method for retaining curing temperatures of cold weather concrete in the domestic construction site. And the tent fabrics as curing sheet for heating-insulation curing are prevalent in the domestic construction site due to low price and easiness to handle. But the material is very low in insulative efficiency and high in heat-loss coefficiency; moreover, it is easily torn off and a successive rupture phenomenon arises due to its low tensile performance, which makes it difficult to maintain the temperatures fit for curing, so frequently they have trouble in preventing the frost damage at the beginning due to the low efficiency in heating-insulation curing process. Accordingly, this study aims at verifying the efficiency in the use of the improved bubble sheet for heating-insulation curing sheet through the analysis of concrete structure, temperature history of the space for installing the curing sheet, and strength property of concrete by applying the improved bubble sheet, which is created by reinforcing the tensileness of the bubble sheet excellence in insulative performance with mesh-tarpaulin as heating-insulation curing sheet for cold weather concrete, to a field in the cold weather. As a result, it is verified that when you use improved bubble sheet as a substitution for the tent fabric, it is very efficient in the control of cold weather concrete quality and has great effectiveness in securing strength because of high tensileness and excellent insulativeness in the cold weather environment.