Connection structure of cushion

The invention relates to a connection structure of a cushion. The connection structure comprises a supporting frame which is formed by connecting a plurality of bracket units and edge strips connected with the edges of the supporting frame. The connection structure is characterized in that each bracket unit comprises a supporting column, a border surrounding the supporting column and a connection strip for connecting the supporting column with the border; the edge strips are provided with sleeved connection pieces capable of clamping the supporting columns in a sleeved manner; the sleeved connection pieces penetrate through the lower side surfaces of the borders and clamp the supporting columns in a sleeved manner, so that the edge strips are detachably and fixedly connected with the supporting frame. The supporting frame and the edge strips are independently subjected to die opening separately, so that the size of the supporting frame can be changed, namely the edge strips can be lengthened or re-cut at a pr