A good way to solve dog’s bad breath:

1. Brush teeth regularly. Choose the right tooth cleaning product for your dog. Pay attention to using one specially made for pets. The toothbrush should be softer and the toothpaste is edible. Clean it two to three times a week according to the actual condition of your dog.

2. Grind your dog’s teeth. You can use bones, teething toys, teeth cleaning sticks, etc. to grind your dog's teeth, which can clean the mouth and remove tartar during the chewing process.

3. Supplement your dog with vitamins. You should make your dog drink more water and exercise more, which can promote metabolism. You can also feed probiotics to regulate the gastrointestinal tract. Pay attention to supplementing vitamin B, which can effectively relieve your dog's bad breath.

4. Do not feed human food to dogs. Don’t let your dog eat soft food too often. Eat dog food as the main food. Dog food can not only provide the dog with rich nutrition, but its hard texture can also play a role in grinding and cleaning teeth.

5. Use medicines that can remove tartar. Long-term use of this kind of medicine can dissolve dental plaque and tartar, keep your dog's breath fresh, and you can also give your dog mouthwash every day to avoid the growth of bacteria.