To provide a knee supporter which neither squeezes the knee too strongly nor hurts the knee, has appropriate compressibleness and adhesiveness, and has good bending and stretching performance at the knee.

A supporter for the knee joint is provided, which comprises a tightening section A for preventing longitudinal slippage of the supporter, a knee joint cap section B, an X-shaped section C surrounding the cap section in a crossing manner, and a knitted fabric section D containing the rest. In the supporter for the knee joint, the knitted fabric forming the knee joint cap section B has the lowest compressibleness and adhesiveness, and the knitted fabric forming the X-shaped section C surrounding the cap section in the crossing manner has compressibleness. The knitted fabric section D forming the rest of the supporter is made of a buffering knitted fabric for facilitating bending and stretching of the knee joint.