Fence for building city planning

The utility model discloses a fence for building city planning, which comprises a fixing rod, a protective fence is detachably mounted on the fixing rod, a fixing block is fixedly connected to the protective fence, a clamping block is slidably connected to the fixing block, a placing groove is formed in the fixing rod, a fixing component is arranged in the placing groove, and the clamping block is slidably connected to the clamping block. The fixing part abuts against the clamping block. The fixing part comprises a first positioning block and a second positioning block, and the first positioning block and the second positioning block are both fixedly connected into the containing groove. A second magnetic block is pushed to enable a first magnetic block to drive a clamping block to move in a placing groove, the clamping block retracts into a transition groove and is far away from a first positioning block and a second positioning block, a fixing rod is pulled to enable a fixing block to be far away from the p