The present invention relates to a fish trap lifting machine. The present invention provides a fish trap lifting machine comprising: a fish trap detachment device and a fish trap recovery device for separating and recovering a lifted fish trap, respectively; a support rod for installing the fish trap detachment device and the fish trap recovery device on a ship; and at least one connection columnfor connecting the support rod and the fish trap recovery device, wherein the connection column at least comprises a lower column and an upper column, the lower column is fastened to the deck of the ship, and the upper column is configured to be fastened to the upper end of the lower column such that the same can extend upward by a predetermined length.