The utility model provides a metal bar twisting manufacturing device, belongs to the technical field of electric power, and solves the problems of labor waste, unsafe process, high defective rate, easiness in damaging the surface of a metal bar and the like in the conventional mode. The bottom surface of the fixed cylinder is connected with the top surface of the fixed cylinder support; one end ofthe fixed cylinder is of a closed structure and is provided with a first rectangular groove; the other end of the fixed cylinder is connected with the rotating cylinder cover; the inner diameter of the fixed cylinder is matched with that of the rotary cylinder cover; a second rectangular groove is formed in the rotating cylinder cover; the first rectangular groove is opposite to the second rectangular groove; a first arc-shaped groove and a second arc-shaped groove are radially formed in the fixed cylinder close to the rotary cylinder cover; the first arc-shaped groove and the second arc-shaped groove are opposite and are positioned on one side of the rotating cylinder cover; a first inserting rod hole and a second inserting rod hole are formed in the connecting position of the rotating cylinder cover and the fixed cylinder, the first inserting rod hole is opposite to the second inserting rod hole, the first inserting rod hole is communicated with the first arc-shaped groove, the second inserting rod hole is communicated with the second arc-shaped groove, and one end of the twisting rod sequentially penetrates through the first arc-shaped groove, the first inserting rod hole and the second inserting rod hole to reach the second arc-shaped groove.