Stiff neck muscles can be caused with cervical spondylosis, soft tissue injury of the neck and fasciitis, etc. It is usually relieved by medication, physical therapy and hot compresses. 1. Cervical spondylosis: If neck diseases such as cervical spondylosis lead to poor blood circulation in the neck, thus resulting in stiff neck muscles. Patients can take oral muscarinic drugs such as baclofen tablets to relieve. 2. Neck soft tissue injury: If the neck muscle stiffness due to neck soft tissue injury can also be relieved through physical therapy, it is recommended to go to the regular hospital for infrared therapy, can relieve muscle tension, to achieve the effect of spasmolytic. Patients can also use local hot compresses to promote blood circulation in the neck. 3. Fasciitis: If the neck muscles are tense and stiff due to fasciitis, you can take medication, oral non-steroidal anti-inflammatory drugs such as diclofenac sodium delayed-release tablets, antispasmodic drugs, such as ethylpiperidone tablets. Can also assist physical therapy such as infrared therapy and heat therapy to further relieve the symptoms of muscle stiffness. It is recommended that the occurrence of neck muscle stiffness has not been relieved, to consult a doctor in time, do not self-medication, in order to avoid adverse consequences.