The utility model discloses a quick leveling marking chi of photosensitive seal formula belongs to the used measurement auxiliary assembly field of building engineering specialty. Its technical scheme does: a quick leveling marking chi of photosensitive seal formula, includes dipperstick and photosensitive seal external member, photosensitive seal external member detachable installs the bottom at the dipperstick, photosensitive seal external member includes seal base and photosensitive seal, sets up the through -hole on the seal base, and photosensitive seal sets up in the through -hole. The beneficial effects of the utility model are that: that the marking effect is obvious, can the high efficiency carry out marking work.