To provide a load testing device for a manhole for carrying out, on a spot, a load resistance test of the manhole installed in a company yard.

The load testing device for the manhole for carrying out, on the spot, the load resistance test of the manhole comprising a manhole cover and a cover frame for the manhole has a frame having right and left columns and a beam extending between the right and left columns; a fixing means for temporarily fixing the columns to a building spaced from the manhole; a pressurizing means extended downward from the beam to apply downward pressure to the manhole cover; and a pressure measuring means for measuring a pressurized state to the manhole cover.