The dilator used in IUD can mainly play the role of pubic expansion, some patients will have a feeling of swelling, or even pain phenomenon, which may be normal or abnormal, and can take temporary observation, drug intervention, home care and other ways to relieve. 1. Normal: For some women with more sensitive physique, there may be slight swelling and discomfort in the private parts after using the expanding device, which is a common phenomenon and usually does not require special treatment, and usually improves with the passage of time, and do a good job of related hygiene and care can be. 2. Abnormal: IUD with dilator distension difficult, do not rule out and local inflammatory factors, you can cooperate with the doctor to give ibuprofen, acetaminophen and other anti-inflammatory and analgesic medication, you can relieve the phenomenon of local pain and distension, but also play the effect of anti-inflammatory. At the same time, you also need to pay more attention to the perineal area of the clean, the diet should also be light and nutritious, do not pick food partiality. It is recommended that women should combine their own situation, cooperate with the doctor to improve the examination, and then give targeted treatment and therapy.