Soak the sweater: prepare a basin and pour warm water, then pour the clothes softener, and put the shrunk sweater into the basin for soaking. Stretch the sweater: soak the shrunk sweater for 30 minutes, and then stretch the shrunk position of the sweater. Dry woolen sweater: dry woolen sweater, ironed when it is half dry, and restored to its original state.

1. Sweater soaking: Prepare a basin, pour warm water, then pour clothes softener, and soak the shrunk sweater in the basin.

2. Stretch the sweater: fully soak the shrunk sweater for 30 minutes, and then stretch the position where the sweater shrinks.

3. Sweater drying: dry the sweater and iron it when it is half dry to restore it to its original state.

Other methods:

1. Find a piece of thick cardboard and pull the sweater to its original size. This method requires two people. Remember not to push too hard, but pull as lightly as possible. Then iron the sweater and set it.

2. Wrap the sweater with a clean towel and put it on the steamer. Remember to wash the steamer, and don't let the oil smell on the steamer get on the sweater. Steam for ten minutes, take it out, then pull the sweater back to its original size and dry it.

Dry clean first, then find a special shelf with the same model as the clothes, hang the sweater and steam it at high temperature.