A knee support has a body and two pressing strips. The body is a band having two ends, a central segment, a protecting portion, and a shockproof pad. The protecting portion is formed in the central segment of the body. The two pressing strips are formed on the outer surface of the body and each has a distal end and a connector being formed on the distal end. The distal end of the pressing strip mounted through the ring, folded back on itself and attached to the body using the connector. The body orientates and holds the knee support in position while the pressing strip presses tightly against and supports a patella of the knee. The knee support prevents discomfort associated with loss of blood and provides good shock-absorption for the knee.