Abstract: In a structure of spacer fabric surface layer and a reinforced knitting method of producing the structure, the method includes a surface mesh layer, a middle support layer and a bottom fabric layer; wherein the surface mesh layer is consisted of a plurality of main segments and extending segments, each main segment is formed by lapping two loop strings, and each extending segment includes one single loop string, the loop string is formed by stringing a plurality of loops; when in the knitting process, moving the yarn of the middle support layer up and down between the surface mesh layer and the bottom fabric layer to let the yarn of the middle support layer connect with the main segment of the surface mesh layer at one end and connect with the bottom fabric layer at the other end, therefore, the yarn of the middle support layer laps with the extending segment when it moves to the extending segment to reinforce the extending segment.