You can get water in the eye of the needle after infusion, but it is important to note that it is best to leave it for an interval of 1-3 hours. Although the eye of the needle after the infusion is thought to be unable to get wet, because it is easy to enter the bacteria at the eye of the needle and cause infection. However, this situation is actually very rare in life, and the subcutaneous tissue will close up after the puncture needle is removed, making it difficult for bacteria to enter. China and foreign countries do not handle this situation in the same way. In foreign countries, it is not recommended to keep the needle eye out of water for a long period of time after the infusion so that you can carry on with your normal work and life, but in China, it is recommended to minimize water exposure in order to avoid infections, which are very unlikely to occur. In fact, if the wound is locally crusted within a few hours after infusion, it is perfectly fine to touch normal household water.