The utility model provides a kind of construction column formwork reinforcing device, including construction column and four mounting racks, two fixed blocks are fixedly installed on mounting rack, fixed groove is set in the inside of two fixed blocks, the inside of two fixed grooves is slidably connected with connecting plate, and connecting rod and positioning rod are fixedly installed respectively in the both ends of two connecting plates. By pulling the pull ring, the locking of the first movable plate or the second movable plate is released, so that the first movable plate or the second movable plate inside the mounting rack slides along the guide rod through the guide block, the position is adjusted to adapt to different size templates, the versatility of the device for different size construction columns is improved, after adjusting to the appropriate position, the pull ring is loosened, the positioning rod is inserted into the corresponding positioning slot, and the position of the first movable plate or the second movable plate is fixed. And multiple positioning slots enhance the adaptability of the device to different construction column sizes.
