Shoulder pain with low fever may be caused by influenza, frozen shoulder, cervical spondylosis or acute shoulder arthritis. 1. Influenza: Influenza is an acute respiratory infection caused by the influenza virus, and the patient may have generalized aches and pains, resulting in shoulder pain with low fever. 2. Frozen shoulder combined with bacterial infection: If the patient has the symptoms of shoulder pain with low fever, it may be caused by chronic injury inflammation of tendons, muscles and joint capsule around the shoulder joint due to long-term physical labor, trauma and other reasons, and combined with bacterial infection. 3. Acute shoulder arthritis: mostly caused by inflammation, infection and trauma, which may also lead to shoulder pain with low fever. If the patient has shoulder pain with low fever, he should consult a doctor in time and choose the appropriate treatment under the guidance of the doctor.