Reasons why cats shed tears:
1. First, cats may also experience tearing if they have other illnesses, such as a cold or feline rhinotracheitis.
2. Dietary issues: The ingredients in cat food may cause cats to tear up, or feeding cats human food may also cause them to tear up.
3. Some cats are born with blocked tear ducts, which causes them to tear up constantly and easily leads to unsightly tear stains. 
Solutions for cats' tearing:
1. Sometimes a cat's daily diet can affect its health. After all, cats are delicate, and if their diet is too spicy or stimulating, it may cause problems such as eye irritation. Therefore, cat owners should pay attention to making their cat's diet lighter when preparing it.
2. In addition to paying attention to the cat's diet, it is also important to take measures to clean the cat's eyes at this time.
3. There are also other daily tasks that need to be done well, such as maintaining environmental hygiene, since cats generally have certain requirements for their living environment.