Abstract: A portable barbecue oven includes an oven body, a scissor-shaped frame movably attached to the oven body having a first bracket and a second bracket, and two guiding wheels; the top end of the first bracket is adjustable relative to the oven body through a folding mechanism, and the folding mechanism includes a connection member and an adjustment piece; the adjustment piece has a slot for the connection member to pass through, the connection member can slide inside the slot so as to achieve the unfolding or folding of the scissor-shaped frame. Furthermore, during operation, the frame is lifted up and down stably by the rolling of the guiding wheel and the connection member is positioned by the position locking hole, so that the barbecue oven can be effectively prevented from toppling over during the unfolding or folding process.