The invention discloses an offshore construction platform hoisting positioning device and method, and relates to the field of offshore foundation construction. The offshore construction platform hoisting positioning device comprises two oppositely-arranged adjusting beams. Each adjusting beam is provided with at least two supporting piles. Each supporting pile is provided with an adjusting pile cap connected with the corresponding adjusting beam. The adjusting pile caps can move along the supporting piles and are fixed to the supporting piles. When the adjusting pile caps move, the adjusting beams are driven to ascend and descend. Male heads can move in the direction perpendicular to the adjusting beams on an offshore construction platform and are fixed to the offshore construction platform. Female heads are arranged, the number of the female heads corresponds to the number of the male heads, each adjusting beam is provided with the corresponding female head capable of moving along the adjusting beam and fixed to the adjusting beam, and the female heads are provided with containing space used for containing the male heads. The offshore construction platform hoisting positioning device can finish rapid positioning of the offshore construction platform and is economical, simple and convenient to detach.