The moldy spots inside the meat floss rolls are the fault of the manufacturer. Based on the query of relevant public information, the manufacturer can be required to bear liability for damages. Food safety issues usually arise, and the rights protection methods are as follows:

1. Keep evidence and negotiate compensation and settlement with the merchant.

2. Call the national unified complaint and reporting hotline of the food and drug administration department, or call the consumer rights protection hotline to complain to the Consumers Association or relevant administrative departments.

3. File a lawsuit with the People's Court.