The red pimples on the dog's face are caused by facial inflammation. It is best to take the dog to the hospital for examination. If the situation is not serious, the dog can be given antibiotics or anti-inflammatory drugs. If the situation is serious, surgery may be required. . Many dogs will have this situation, which may be caused by improper hygiene or diet. Therefore, you need to pay more attention to it, bathe and deworm the dog regularly, and keep the diet mainly light.