Thigh soreness from cycling can be caused by excessive lactic acid buildup, muscle strain, and herniated discs in the lumbar spine. Aerobic exercise, medication, and surgery can be used for recovery. 1. Excessive accumulation of lactic acid: Long-time cycling will cause excessive movement of the thighs, resulting in excessive accumulation of lactic acid in the legs and causing symptoms of thigh pain. Can be recovered through aerobic exercise, such as jogging, swimming, can accelerate blood circulation, muscle contraction can promote the absorption of lactic acid, so as to restore the symptoms of cycling thigh pain. 2. Muscle strain: long-term cycling will make the local muscles too tired, resulting in muscle strain, muscle damage can occur cycling thigh pain symptoms. You can use celecoxib capsules for treatment, anti-inflammatory and analgesic effect, thus reducing the symptoms of cycling thigh pain. 3. Lumbar disc herniation: the herniated disc will compress the nerves, cycling lumbar involvement, stimulation of the nerves can lead to pain radiating to the lower limbs, there will be symptoms of cycling thigh pain. Conservative treatments such as hot compresses and physiotherapy can be used first. Surgical treatments can be used if conservative treatments are not effective, and commonly used surgical methods are intervertebral fusion, etc., which can relieve the nerve compression symptoms and eliminate the symptoms of thigh aches and pains. If the patient cycling thigh pain for a long time does not relieve, it is recommended to go to the hospital in time to find out the cause of the disease after targeted treatment.