Internal hemorrhoid injections are suitable for internal and mixed hemorrhoids. Internal hemorrhoid injections are simple, inexpensive, less painful for the patient and have good results. It is also indicated for rectal prolapse and polyps. The most commonly used internal hemorrhoid injection is the internal hemorrhoid oil injection invented by Dr. Chen Jimin in the 1960s, which has the advantages of being inexpensive, easy to perform, effective, and has a low chance of recurrence. However, for clinical patients, the specific type of surgery needed should be determined by the doctor’s interview.