The invention provides a method for producing a felt strip with a support member; wherein, the support member is inserted in to a fiber basal body and comprises at least two yarn layers, of which a yarn layer is a vertical yarn layer and the other yarn layer is a horizontal yarn layer, and the horizontal yarn is continuous on the whole width of the felt strip. For each vertical yarn layer, a firstauxiliary supporting unit is made through a first auxiliary supporting net not wider than a finished felt strip, and the first auxiliary supporting net is spirally wound to the width corresponding tothe width of the finished felt strip. For each horizontal yarn layer, a second supporting unit is made through a single supporting unit chain segment, and each single supporting unit chain segment comprises a second auxiliary supporting net and the yarn. The support unit chain segments are propped on each other one by one on the first auxiliary supporting unit in the vertical direction along thefirst auxiliary supporting unit, forming a second supporting unit. In order for making the felt strip, the felts of non-woven fabric layers are arranged at a side of the support element, forming the fiber basal body.