Convenient safety fence

The utility model relates to a convenient safety fence which comprises a blocking assembly, two fixing assemblies are installed on the blocking assembly, each fixing assembly comprises a long rod, the upper end and the lower end of each long rod are fixedly connected with first moving blocks correspondingly, a mounting piece is fixedly connected to the position, close to the middle point, of the outer side of each long rod, and bolts are in threaded connection with the upper end and the lower end of each mounting piece in a penetrating mode. A shell is fixedly connected to the middle of the outer side of the long rod, a second moving block is movably connected into the shell, a spring is installed between the inner wall of the shell and the second moving block, a short rod and a threaded rod penetrate through the front end and the rear end of the second moving block, and the upper end and the lower end of the second moving block are movably connected. The front ends of the short rod and the threaded rod are f