A head and waist integrated device includes a bracket body. The bracket body is provided with a headrest flipping mechanism and a waist ejecting mechanism. The waist ejecting mechanism includes a fixing base fixedly connected to the bracket body, a first driver rotatably connected to one end of the fixing base, a folding link assembly respectively rotatably connected to the first driver and the fixing base, and a waist ejecting member rotatably connected to the folding link assembly. The folding link assembly has a plurality of links disposed therein, crossing and rotatably connected to each other.