The utility model relates to the technical field of a medical instrument and especially relates to a visible nutrient nasointestinal tube for preventing and treating pressure sore. The visible nutrient nasointestinal tube comprises a nasointestinal tube body and an endoscope, wherein the nasointestinal tube body is used for transmitting nutrients; the endoscope is used for transmitting an image at the front end of the nasointestinal tube; the nasointestinal tube body and the endoscope are arranged in parallel; a nutrient outlet is arranged at the front end of the nasointestinal tube body while a nutrient inlet is arranged at the rear end; a probe is arranged at the front end of the endoscope while an image data output port is arranged at the rear end; and the probe and the image data output port are connected through a data channel. According to the visible nutrient nasointestinal tube for preventing and treating pressure sore, the nasointestinal tube body and the endoscope are arranged in parallel, so that a specific position in the body of a patient reached by the nasointestinal tube is observed and shot; the insert position of the nasointestinal tube is accurate and the insert time is short, so that the pain of the patient caused by the tube inserting is relieved; a check stage under a radioactive condition and a direct operation bed stage are avoided; the mental and physical pain of the patient caused by the tube inserting is relieved; the use cost is lowered; to a certain degree, the absorption for the nutrient solution of a human body is boosted; and the medical care quality is increased.