Oxytocin recrystallization method

The invention discloses an oxytocin recrystallization method and relates to the technical field of medicine. According to the oxytocin recrystallization method, the oxytocin has excellent solubility, and is dissolved in two mixed solvents; after one solvent gradually volatilizes, the oxytocin is gradually crystalized and separated out because the oxytocin is slightly dissoluble in the other solvent; and as a result, oxytocin crystals in a good crystal form can be obtained and the oxytocin also can be refined and purified.