The invention discloses a safety fence comprising a plurality of surrounding rod assemblies, and a surrounding net is connected between the adjacent surrounding rod assemblies. Each surrounding rod assembly comprises a vertical rod and a supporting pedestal disposed at the bottom of the vertical rod. Each supporting pedestal comprises a supporting pawl, spokes, an extension-type needle, a guide sleeve and a movable sleeve; each guide sleeve is fixed to a lower end of the corresponding vertical rod, and each extension-type needle penetrates the corresponding guide sleeve and is connected with the corresponding vertical rod; each movable sleeve is disposed over the corresponding guide sleeve and connected with the corresponding vertical rod in an up-down sliding manner; and an upper end of each supporting pawl is hinged to the corresponding movable sleeve, the central section of each supporting pawl is hinged to one ends of the corresponding spokes, and the other ends of the spokes are hinged to the corresponding guide sleeve. Each vertical rod and the corresponding supporting pedestal are of an integral connection structure, assembly is not required, the safety fence can be used as needed, and the technical problem that in the prior art, a safety fence is inconvenient to use, assemble and disassemble is solved.