Generally, cats do not need assisted defecation when they are about 20-25 days old. At this time, the kitten is already 3 weeks old and needs to form a more regular defecation habit. Then the owner must prepare a litter box and place it in the litter box. Lift it above the cat litter box to stimulate defecation, so that it will gradually form a good habit of using cat litter and defecating regularly. Try to place the litter box as close as possible to the cat's nest, and keep the feces in it, using the smell to guide the kitten to defecate.