The invention discloses a self-lubricating bearing. Four semi-circle grooves (5) of a same structure are symmetrically processed in the inner surface of a shaft sleeve (2) of the self-lubricating bearing; a cross section of each of self-lubricating blocks (3) is of a triangular structure; a high-density mass block (4) is embedded in a circular hole (6) formed in one side of each of the self-lubricating blocks (3); the self-lubricating block (3) embedded with the mass block (4) on the right side is placed in the two symmetrical semi-circle grooves (5), and the other self-lubricating block (3) embedded with the mass block (4) on the left side is placed in the other two symmetrical semi-circle grooves (5); in a rotation process of the shaft sleeve (2), centrifugal force is formed on one sideof each of the self-lubricating blocks (3) on which the corresponding mass block (4) is embedded, so that the purpose of bearing lubrication is achieved when the self-lubricating blocks (3) are in contact friction with a fixed shaft (1) under the effect of the centrifugal force. The self-lubricating bearing has the advantages that the self-compensation, uniformity and continuity of lubrication areimproved, and the carrying capacity, the rotation efficiency and the service life of the bearing are also improved.