A pipe end clamping apparatus includes a first pneumatic cylinder, a second pneumatic cylinder and a clamping component. The first pneumatic cylinder includes a first piston in the first cylinder body, first and second air chambers corresponding to the first and second air inlets respectively, and a first plunger rod installed to the first piston. The second pneumatic cylinder includes a second piston in the second cylinder body, third and fourth air chambers corresponding to the third and fourth air inlets respectively, and, a second plunger rod installed to the second piston. The clamping component has a clamping seat and a clamping component in the housing and pumps air into different air inlets of the first or second pneumatic cylinder to control the first or second piston to displace in the first and second cylinder bodies, so as to control clamping the clamping component or loosening the pipe.