The invention discloses an elevator shaftway construction platform system and belongs to the technical field of building construction. The elevator shaftway construction platform system comprises a frame body framework, wherein second channel steel is arranged horizontally, a first channel steel is connected in the vertical direction of the second channel steel, and third channel steel is obliquely connected between the second channel steel in the horizontal direction and the first channel steel in the vertical direction. Two hanging parts are fixedly arranged on the second channel steel. Platform laid gutter boards are also arranged on the second channel steel. Two pieces of parallel fourth channel steel are installed in each platform laid gutter board. The fourth channel steel is in vertical connection with the second channel steel. Gutter boards are installed in the vertical direction of the two pieces of parallel fourth channel steel. Each adjustable fixed clamping groove consistsof round channel, double nuts, a cushion plate and a wedge-shaped block. The round steel is obliquely and fixedly connected to the cushion plate. The round steel is sleeved with the double nuts. The wedge-shaped block is installed on the cushion plate. The elevator shaftway construction platform system is reasonable in structure, can meet the safety demand of high-altitude drilling in a construction site and can achieve different heights of drilling, and the construction cost is reduced.