Abstract: The present disclosure provides an insole, including a base having a front surface for corresponding to the foot sole of a wearer of a shoe with the insole and a rear surface for corresponding to an inner sole of the shoe; wherein the insole further includes a plurality of protrusions evenly arranged on the front surface; the protrusions have the same heights, each protrusion includes a column fixed on the base and a height of the column protruding out from the base ranges from 1 to 7 mm, and a coverage rate of the protrusions on the base ranges from 30% to 70%.