The utility model discloses a ground rod with a mechanical locking function, mainly comprising an insulating tube 1 and an insulating rod 2 connected with the insulating tube 1, wherein the top end of the insulating rod 2 is sequentially provided with a spring energy storage bolt latch and a spring energy storage bolt tension device 3; the lower part of the insulating rod 2 is provided with a handle 4; the handle 4 is provided with an operating handle 5 and a lockset 6; the lockset 6 is internally provided with a limiting catch 7; the operating handle 5 is provided with a limiting bar 8; the limiting bar 8 is provided with a limiting groove 9; and the limiting catch 7 and the limiting groove 9 are connected in a clamping way. As seen from the figure 1, the handle 4 is also internally provided with a return spring 10 connected with the limiting catch 7. Through additionally arranging the lockset on the handle and by virtue of unlocking/locking the lockset, the operating handle is controlled to use. The ground rod is characterized by being simple in structure, convenient in installation and utilization, and free of damage to equipment, and by being safe as well as reliable. The ground rod has the locking function and ensures the safety of personnel while still being attractive in appearance.