How to get rid of leg pain that happens randomly and at different areas?

Depends: This would depend on the source of the leg pain. I would see your doctor for a full work-up to determine the cause.

Depends on the cause: Your pain could be as a result of many different things. A thorough history and physical exam and possibly some laboratory and radiology exams are needed to determine the exact cause. Causes of pain may include: trauma (fracture, sprain, arthritis), infection, metabolic conditions (gout), circulatory, musculoskeletal or biomechanical abnormality and neurologic conditions (neuropathy).