The utility model provides a portable notebook computer dispels heat and puts up. It includes the bottom plate, two blocks of curb plates, two pivots, a plurality of supporting legss, radiator fan and fan power cord, wherein the the edge on the bottom plate is formed with a plurality of ventilation holes, and the middle part is formed with a fan and sets up the hole, the both sides edge at the bottom plate is connected through a pivot respectively to two blocks of curb plates to back outside edge is equipped with a plurality of supporting legss, the fan that radiator fan installed on the bottom plate sets up downtheholely to be connected with the fan power cord. The utility model provides an usable pivot of portable notebook computer dispels heat and puts up is folding to the centre from the left and right sides with two blocks of curb plates, like this portable and saving space in addition, it is equitable that this device still has structural design, convenient to use and advantage such as with low costs