Automobile brake piston with sealing and lubricating structure

The utility model belongs to the field of automobile parts, and particularly relates to an automobile brake piston with a sealing lubrication structure, which comprises a piston head, the upper end of the piston head is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with a piston skirt, the outer side of the piston head is slidably connected with a cylinder, an oil outlet groove is arranged on the cylinder, and the oil outlet groove is communicated with the piston skirt. An oil storage chamber is formed in the piston skirt, and an oil outlet hole is formed in the piston skirt. The lubricating push rod, the spring, the limiting block, the limiting groove and other structures are additionally arranged in the piston skirt, when the piston skirt carries the lubricating push rod to the oil outlet groove, the lubricating push rod is pushed into the oil outlet groove under the elastic force action of the spring, at the moment, the oil outlet hole is communicated wit