Symptoms of back muscle strain include pain, stiffness and pressure pain. 1. Pain: Back pain occurs, which is aggravated after cold stimulation or exertion, and relieved after resting or applying hot compresses. The pain is relatively severe after waking up in the morning, and is relieved after appropriate activities, and aggravated after over-exertion. 2. Stiffness: The back muscles will be stiff, and the stiffness is relatively serious after waking up in the morning. 3. Pressure pain: When palpation is performed, there will be extensive pressure pain in the back. When back muscle strain occurs, it is necessary to pay attention to rest, develop a good posture, pay attention to the back to keep warm. It can be treated with hot compresses and massage, which can relieve the pain. If the back muscle strain pain persists, you should go to the hospital in time for further examination, and follow the doctor’s instructions for standardized treatment after a clear diagnosis, so as not to delay the condition.