Nails growing with flesh may be caused by improper nail trimming, trauma and nail bed infection. 1. Improper trimming of nails: When patients trim their nails, they cut them too short, the granulation tissue will grow forward, and after the nails grow forward again, the symptoms of nails growing together with flesh may occur. 2. Trauma: when the nails are hit by external forces, resulting in deformation of the nails, it is easy for the nails to grow together with the flesh in the process of growth. 3. Nail bed infection: when the patient’s nail bed is traumatized, it may be infected by bacteria or fungi to the nail bed area, resulting in nail bed infection, causing the patient to have nails growing together with flesh. When the patient has symptoms of nails growing with flesh, it is recommended to go to the hospital for examination and diagnosis in a timely manner, and under the guidance of the doctor for treatment.