Multi-span double-layer inflatable film greenhouse framework

The utility model discloses a multi-span double-layer air inflation film greenhouse framework which comprises a wall frame and a plurality of roof frames which are fixedly connected above the wall frame and arranged in the left-right direction, the wall frame comprises a plurality of outer stand columns and a plurality of inner stand columns, and all the inner stand columns are arranged in an array mode and jointly form a rectangular structure. The outer stand columns are located on the periphery of the rectangular structure, the roof frame comprises longitudinal beams extending in the front-back direction, the longitudinal beams are fixedly connected with a plurality of arched beams distributed in the front-back direction respectively, the arched beams are fixedly connected with the outerstand columns or the inner stand columns through water tank connecting bases, and water tanks and dew receiving tanks are arranged on the left side and the right side of the roof frame respectively.And the water tank and the