Cotton doll raised dead means that during the breeding or care process, due to some reasons, the cotton doll can not continue to survive or grow, and eventually die. This can be caused by wrong breeding methods, unsuitable environment, disease infection, malnutrition and so on.

To avoid keeping cotton dolls to death, the following measures can be taken:

1. Provide suitable environment: Cotton dolls need suitable temperature, humidity and light conditions. According to different varieties and seasons, provide suitable environmental conditions to ensure their normal growth and development.

2. Correct feeding methods: Understand the feeding needs of cotton dolls, including feed, water, feeding containers and so on. Follow the correct method of feeding and care to avoid over or under feeding.

3. Disease prevention: Regularly check the health condition of the cotton dolls, detect and deal with possible diseases in time. Keep the feeding environment clean and sanitary to avoid the spread of pathogens.

4. Provide proper nutrition: Provide balanced feeds according to the growth stage and needs of the cotton dolls to ensure that they get enough nutrition.

5. Pay attention to observation and interaction: Observe the behavior and appearance of the cotton dolls frequently to detect abnormalities in time. Interact with the cotton doll appropriately to enhance its vitality and life force.