Anaerobic infections can manifest symptoms in the respiratory system, abdominal cavity, skin and soft tissues, bones and joints, and commonly include chronic sinusitis, tonsil abscess, joint swelling and pain, and limitation of movement. 1. Respiratory system: anaerobic infections may present with symptoms such as chronic sinusitis, tonsil abscess, cough and chest pain. 2. Abdominal cavity: anaerobic bacterial infections may manifest symptoms such as abdominal pain and fever. 3. Skin and soft tissues: anaerobic infections may present with localized redness, swelling, and putrid-smelling discharge. 4. Bones and joints: Anaerobic infections may present with symptoms such as joint swelling and pain, limited mobility, and foul-smelling pus discharge from the vicinity of the lesion. 5. In addition to the general inflammatory symptoms that may occur with anaerobic infections, the pus or discharge may have a foul odor. Anaerobic infections can manifest symptoms in the respiratory system, abdominal cavity, skin and soft tissues, bones and joints, etc. It is recommended to seek prompt medical attention and receive standardized anti-anaerobic treatment after the diagnosis of anaerobic infections has been confirmed by a physician.