High -efficient earth bar. An improve that electric power apparatus field especially relates to the earth bar is related to. The utility model provides a structure is exquisite, stability good and adjust convenient high -efficient earth bar. Be connected through one -way ratchet wheel between barred body and the center pin, the couple locate the barred body one side, and link up with fixed linking to each other of one end of bottom and center pin, the adjusting part includes driving -disc, actuating lever and handle, the central fixed connection of driving -disc keeps away from the one end of couple at the center pin, the handle cup joints the one end of keeping away from the center pin at the barred body, the one end of actuating lever articulates in the quotation of driving -disc and the other end articulates the top at the handle, have that the regulative mode is simple, low in labor strength and the good characteristics of stability, have during the use can be convenient the contained angle to between couple and the barred body adjust to can stabilize the characteristics of locking.