The invention relates to a T-shaped outer spherical surface aligning bearing seat with a safety protection cover. The bearing seat comprises a seat body and a safety protection cover, wherein the seat body is provided with a bearing installation port, and one end of the seat body is provided with an adjustment screw rod which is provided with an adjustment screw rod nut; the safety protection cover comprises a cup-shaped mesh shade and a fixed bracket, a serriform ratchet is welded on the outer wall of the cup-shaped mesh shade, and the serriform ratchet and the outer wall of the cup-shaped mesh shade are welded into a whole to form two symmetrical straight grooves; and the fixed bracket is formed by a fixed horizontal arm, a fixed vertical arm and a connection arm, the connection arm is provided with a C-shaped groove, two arms of the C-shaped groove are respectively buckled in the straight grooves, the fixed horizontal arm is installed on the lower part of the connection arm to form a right angle, the fixed vertical arm is installed on the lower part of the fixed horizontal arm and is vertical to the fixed horizontal arm, and the fixed vertical arm is provided with an elongated groove. The bearing seat provided by the invention is subjected to safety protection, and can improve the protection measures on the safety production.