The invention relates to a developing stomach tube which comprises a tube body. The tube body comprises a medicine injection port and a medicine outlet, wherein the medicine injection port is provided with a dustproof cover, a luminous cavity is formed in the tube body, and a luminous band is arranged in the luminous cavity. A battery installing tube is arranged on the tube body, one end of the battery installing tube is communicated with the luminous cavity, a battery is arranged in the battery installing tube, an energizing circuit is arranged between the battery and the luminous band, and a press-type switch for controlling on and off of the energizing circuit is arranged at the other end of the battery installing tube. When the developing stomach tube is used, the luminous band in the luminous cavity performs luminous development, the positions of the tube body and the tube end can be known without an auxiliary device, hard light emitted by the catheter can clearly show the positions for a patient with the indwelled stomach tube and needing an operation, the effect is visual, and the stomach tube has no injury or side effect on a human body.