The lifespan of Chinese hamsters is usually 2 to 3 years. The lifespan of hamsters is closely related to their body size and metabolic rate. Due to their small size and high metabolic rate, their cells are depleted relatively quickly, so their lifespan is relatively short.

Factors Affecting the Lifespan of Hamsters
Genes and Heredity: The genes of hamsters determine that their lifespan is relatively short, which is a survival strategy among mammals.
Living Environment: A good living environment and proper care can extend the lifespan of hamsters. For example, providing enough space for activities, a suitable diet, and avoiding stress can help hamsters live a healthier life.
Diet: Hamsters need a balanced diet. It is necessary to avoid excessive consumption of high-fat foods such as sunflower seeds, and it is recommended to provide more fresh vegetables and fruits.
Social Behavior: Hamsters are solitary animals and are not suitable for mixed breeding. Otherwise, fights may occur.
Methods to Extend the Lifespan of Hamsters
Provide a Good Living Environment: The cage for hamsters should be large enough. Provide toys such as running wheels and tunnels to ensure that they have enough space for activities.
Balanced Diet: Avoid overfeeding high-fat foods like sunflower seeds, and provide more high-quality hamster food, vegetables, and fruits.
Avoid Stress: Hamsters are solitary animals and are not suitable for mixed breeding. Unnecessary stress and scares should be avoided.