A jejunum cannula releasing system adapted to be implanted into duodenum, the jejunum cannula comprising a membrane tube and a stent , the releasing system comprising an implanting device, a pushing assembly, a fixing line and a releasing line , wherein the implanting device comprises a storage tube shell , a releaser , the membrane tube and the stent , wherein the storage tube shell is tubular, the storage tube shell has a proximal opening and a distal opening, the membrane tube and the stent to be released are arranged in the storage tube shell in a folded state, a proximal end of the membrane tube is connected with a distal end of the stent , and the releaser is provided at the distal opening of the storage tube shell and connected with a distal end of the membrane tube ; the pushing assembly comprises a push-pull guidewire , an inner tube , a middle tube and an outer tube , which are sleeved on one another from the inside out in sequence and are movable relatively with respect to each other, wherein a distal end of the push-pull guidewire abuts against the releaser ; a part of the inner tube is located inside the storage tube shell and connected with the releaser ; one end of the middle tube protrudes into the storage tube shell through the proximal opening of the storage tube shell , and the one end of the middle tube is fixedly provided with a pushing block located in the storage tube shell for pushing against the stent ; the outer tube is located outside the storage tube shell and has one end directly or indirectly fixedly connected to the proximal opening of the storage tube shell ; one end of the releasing line is fixed on the inner tube , and the other end of the releasing line is a free end; and a first end of the fixing line is fixed on the middle tube , and a second end of the fixing line cooperates with the free end of the releasing line to form a slipknot to connect the membrane tube and the releaser , wherein the releaser has an outer circumferential wall and an inner cavity capable of communicating with an inside of the storage tube shell , the releaser is provided thereon with a guidewire quick exchange channel for a further guidewire adapted to guide the implanting device into the duodenum, wherein the guidewire quick exchange channel is formed by direct communication of two channel openings on the releaser , and the two channel openings are both located on an outer surface of the outer circumferential wall exposed to the storage tube shell , the guidewire quick exchange channel does not pass through the inner cavity of the releaser ; and the releaser is provided with a guidewire groove cooperating with the push-pull guidewire in a manner of insertion; and the releaser contains a developing material which is able to be developed under X-ray. the releaser has an outer circumferential wall and an inner cavity capable of communicating with an inside of the storage tube shell , the releaser is provided thereon with a guidewire quick exchange channel for a further guidewire adapted to guide the implanting device into the duodenum, wherein the guidewire quick exchange channel is formed by direct communication of two channel openings on the releaser , and the two channel openings are both located on an outer surface of the outer circumferential wall exposed to the storage tube shell , the guidewire quick exchange channel does not pass through the inner cavity of the releaser ; and the releaser is provided with a guidewire groove cooperating with the push-pull guidewire in a manner of insertion; and the releaser contains a developing material which is able to be developed under X-ray. <EOS>