When you wake up in the morning with blood in your mouth, it may be due to a large amount of calculus in your mouth, which irritates your gums with symptoms of gingivitis, or you may have developed receding gums. Loss of gum attachment is the reason for the development of periodontal disease. Periodontal disease tends to cause loose teeth, receding alveolar bone and even tooth loss, so it should be treated promptly. Usually, teeth can be scaled, and if there is calculus under the gums subgingival scraping should be performed and root planing should be performed. It is also recommended to rinse with hydrogen peroxide saline alternately, and mouthwash can also be used, which can effectively inhibit bacterial infection in the oral cavity. Routinely, compound chlorhexidine rinse and compound tinidazole rinse can be used. At the same time, it is recommended to polish the medication, can be regular medication such as the application of iodine glycerin or minocycline hydrochloride. The medication can be applied once a week or so to effectively control the gingival hemostasis.