The invention discloses a manufacturing process of a 
sponge-free mattress. The manufacturing process comprises the following steps: (1) selecting raw materials, namely, selecting 
face cloth, soybean 
fiber cotton, 
polyester fiber cotton and a plurality of pieces of lining cloth; (2) forming a shell fabric, namely, carrying out quilting on the 
face cloth, the soybean 
fiber cotton, the 
polyester fiber cotton and the lining cloth by adopting a quilting 
machine, thus manufacturing a composite shell fabric; (3) carrying out 
cutting and 
sizing, namely, according to the needed manufacturing size of the mattress, 
cutting the composite shell fabric, and carrying out sewing and forming through a 
sewing machine; and (4) carrying out spring manufacturing and assembling, namely, manufacturing springs through a spring 
machine, and carrying out assembling for forming a net on the springs according to the size of the mattress. For the manufacturing process of the 
sponge-free mattress, the 
polyester fiber cotton and the soybean fiber cotton are adopted for replacing 
sponge in the mattress, through the reform and innovation of the manufacturing process, the service life of the mattress is greatly prolonged, and the potential safety hazards caused to the body health by the traditional mattress adopting the sponge technology are eliminated.