The invention discloses a multi-shaft integrated processing device. Multiple turning machine heads are arranged on the same frame in an integrated manner, the structure is more compact, the area of the workshop occupied by the multi-shaft integrated processing device is greatly saved, and the production line cost is reduced at the same time; the turning machine heads are arranged in a stepped manner, a material channel connecting two adjacent turning machine heads is arranged in an inclined manner, parts can be transferred among the turning machine heads by means of the gravity of the parts, the transferring speed of the parts is greatly increased, impact among the parts is reduced at the same time, the possibility of that the parts fall to the ground is effectively reduced, the product quality is improved, and field management is facilitated; for each turning machine head, a carriage mechanism is integrally arranged on a main shaft box, a work bench of a conventional turning machine tool is removed, and the turning machine head is more compact in structure; a work bench which can block an operator from a clamp mechanism does not exist, and therefore feeding and blanking can be carried out from the front side of the clamp mechanism, and the operation is more convenient; by employing the structure without the work bench, fragments, liquid coolant and the like can be collected and cleaned more conveniently.