The invention discloses a production method of a spring mattress; the method includes the steps that 1) firstly, the springs are separately wrapped in non-woven fabric bags by a machine; 2) secondly, the non-woven fabric bags wrapped by the machine are arranged in columns and adhered in machine bench; the production method of the spring mattress is characterized in that: 3) a tailored sponge block with the same length as the length of the edge of the bed is adhered with the columns of non-woven fabric bags in the machine bench; 4) finally, the mattress with combined bed edges is covered by a bedspread to form an integral spring mattress. Because the production method accomplishes the adhesion process of the bed edge sponge body through the machine bench; the machine bench has the positioning function, the accuracy and flatness of the bed edge adhesion can be guaranteed; meanwhile, the production efficiency of the machine bench is improved greatly compared with the manual operation.