Bicycle handlebar

A bicycle handlebar, comprising a handlebar tube and a handlebar head, wherein the handlebar head comprises a curved arm and grips, a middle section of the curved arm is fixedly connected to a top end of the handlebar tube, and the grips are formed by outward extension of two ends of the curved arm, and each grip is fixed with a handlebar covering and a brake lever;

• wherein the curved arm is of a structure that inclines forward relative to the handlebar tube, and the grips stretch along the two ends of the curved arm toward the left and right sides, so that the entire handlebar head forms a structure that inclines forward;
• a positioning groove that is concave toward the inside of the handlebar tube and longitudinally extends along the handlebar tube is provided in the outer surface of a tube wall of the handlebar tube, and the handlebar tube and a tube wall positioning protrusion of a bicycle handlebar support tube form a mutually-inserted positioning structure through the positioning groove;
• and a limiting hole horizontally penetrating the handlebar tube is provided at an upper position of the handlebar tube, and a limiting screw is threaded in the limiting hole to form a limiting structure capable of locking a top end of the bicycle handlebar support tube;
• wherein the positioning groove is provided in the rear surface of the handlebar tube, and the positioning groove is an arc-shaped slot whose cross section is a V-shaped structure, with an opening angle of 50 degrees to 70 degrees.