The utility model discloses a single storage battery body replacement device. The single storage battery body replacement device is characterized in that two rows of idler wheels are arranged at the lower end of a support, the upper end of the support is provided with a cross beam, the front end of an operating rod is hinged to the middle of the cross beam, the lower side of the middle of the operating rod is connected with an arc rod, one end of a pull rope is connected with the arc rod through a pull ring, the other end of the pull rope is connected with the middle of a cross arm, and the two ends of the cross arm are provided with bolts connected with a single storage battery body. When the single storage battery body replacement device is used, a base of the support is placed in a battery pack groove, the idler wheels are arranged on the edge of the battery pack groove, the support can roll along the battery pack groove, the bolts are connected with the single battery body to be replaced, the operating rod is uplifted to pull out and move out the single battery body to be replaced, then the bolts are connected with a new single battery body, the operating rod is moved to the replacement position and put down, and then the new single battery body is placed in. The single storage battery body replacement device has the advantages of being easy to operate, good in safety, low in single storage battery body replacement cost, high in efficiency, high in economic benefit and the like.