The invention relates to a portable multifunctional barbecue oven, which comprises a furnace body (1), the furnace body (1) is barrel-shaped, at least three legs (31) are arranged on the lower part of the furnace bottom (3), and the furnace body (1) A charcoal cage (4) is provided above the inner furnace bottom (3), a furnace cover (5) is provided above the furnace wall (2) and the charcoal cage (4), and several groups of strip-shaped gaps are provided on the furnace cover (5) (52), each group of bar-shaped slits (52) has a skewer pick-and-place opening (53). It can be disassembled for storage and storage, which is convenient to carry, takes up little space and has multiple functions. It is very convenient to assemble and disassemble, and it does not waste time in operation. It adopts the method of baking to make the skewers healthy, which can make the skewers heated more evenly, without turning over the skewers frequently, the unnecessary loss of heat is small, and charcoal is saved. It can be used not only for skewers, but also for grilling meat on a grill pan, and for hot pots, which enriches the diversity of food and is flexible and convenient to use.