很简单，只是很麻烦

1. 多刷牙。每天至少三次，饭后一定，如午睡，醒后要刷

2. 刷牙后还要做三件事儿：刮舌头，牙线通牙，漱口水漱口


http://www.amazon.com/Dr-Tungs-Tongue-Cleaner-Stainless/dp/B00064JGBO/ref=sr_1_1?ie=UTF8&qid=1401165698&sr=8-1&keywords=tongue+scraper


http://www.amazon.com/Oral-B-Glide-Pro-Health-Comfort-Flavor/dp/B00240UWGG/ref=sr_1_1?ie=UTF8&qid=1401165737&sr=8-1&keywords=dental+floss


http://www.amazon.com/Restoring-Fluoride-Mouthwash-Spearmint-Bottles/dp/B001H54RB0/ref=sr_1_4?s=hpc&ie=UTF8&qid=1401165779&sr=1-4&keywords=mouth+rinse

（产片只是例子，不是推荐。）

3. 平时不断地喝淡茶，有机会嚼嚼茶叶

4. 不停地嚼口香糖


对了，这只除气味，不是治根源。