The invention discloses a portable electric generator. The portable electric generator comprises an electric generator body, a box, bases, an exhaust pipe, an exhaust fan, cooling pipes and a pulling rod, wherein the electric generator body is fixed inside the box; the bases are arranged on the outer side of the bottom of the box of the electric generator; the lower portions of the bases are connected with guide wheels; the exhaust pipe is arranged in the middle of the box; the exhaust fan is arranged inside the exhaust pipe; the cooling pipe is fixed to the side wall inside the box; the pulling rod is connected with the upper portion of the box. In this way, the portable electric generator is convenient and rapid to carry, does not need to be transferred through a special transfer device, can be carried whenever a user goes, is good in heat dissipation effect and is suitable for use sites easy to change.