Load carrying rack unit

The utility model relates to a load carrying rack unit comprising a boat bearing rack, a connecting piece and a bicycle bearing rack, wherein the connecting piece presents a downward frame shape, the two open sides of the connecting piece are fixedly arranged on the top of an outside rod of the boat bearing rack, joining lugs of the bicycle bearing rack are enabled to be sleeved on two sides of the closed end of the connecting piece, and a movable bolt and a pilot pin penetrate through the connecting piece after penetrating through the upper and lower parts of the joining lugs to enable the bicycle bearing rack and the boat bearing rack to be connected movably, thus the load carrying rack unit can simultaneously carry a bicycle, a boat, a surfboard or other long materials.