Is it good for your gums to bleed when you clean your teeth?

No. It means that your gums are unhealthy; you need to clean them more often, and to use mouthwash and floss if you don't already. --- When your gums bleed or are inflamed (look a little puffy or red) that is a sign of periodontal disease, such as gingivitis. To combat this, be sure to brush your teeth regularly, and use floss and mouthwash to assist in getting rid of the plaque that causes it. Another suggestion is to use water irrigation, which can go under the gumline better than a toothbrush or floss to get rid of food particles that were missed.