The utility model discloses a portable pole gradient measuring tool has the support frame, the dead lever, its vertical layout, the lower extreme is connected with the top of support frame, the bearing, it arranges the top at the dead lever, the measuring mechanism, it has horizontal base, connecting pipe, semicircle scale and the pointer that dangles, sets up the through -hole along the fore -and -aft direction on the horizontal base, and the connecting pipe is installed in through -hole department, and the place ahead at the bearing is arranged to horizontal base to rear end through the connecting pipe is connected with the inner circle of bearing, and the semicircle scale sets up the downside at horizontal base, and semicircle scale department sets up the pointer that dangles that is used for instructing inclination, front and back end at the connecting pipe sets up the cross curve to as observing the structure, the structure is observed in order to regard as to the telescope of end band cross curve around perhaps setting up in the connecting pipe. This instrument portable, the low price, easily operation, measured data is accurate, can obtain accurate inclination.