Transparent cap for injecting esophageal vein sclerosing agent under endoscope

The invention relates to a transparent cap for injecting an esophageal vein sclerosing agent under an endoscope. The transparent cap for injecting the esophageal vein sclerosing agent under the endoscope comprises a transparent cap shell and a vein puncture window arranged at the end of the transparent cap shell. The transparent cap for injecting the esophageal vein sclerosing agent under the endoscope can improve the accuracy and the treatment success rate of endoscope treatment operation and reduce the probability of endoscope treatment errors, is simple in structure, economic, practical and convenient to operate and can be used safely.