It is difficult to sleep at night feet always feel no place to put, consider for restless legs syndrome, osteoarthritis, lumbar disc herniation and so on. 1. Restless legs syndrome: it is a sensory-motor disorder of the central nervous system. Its clinical manifestations are leg discomfort triggered by leg activities, patients often have indescribable discomfort in the legs; symptoms appear after resting, patients often describe themselves, once lying down or sitting in a chair, the symptoms often appear; slightly relieved after the activity, the activity of the limbs can make the symptoms partially or completely relieved. 2. Osteoarthritis: a chronic degenerative joint disease characterized by focal degenerative changes in articular cartilage, bone loss, and bony encumbrances at the joint margins. When the proliferated bone presses on the nerves, the patient will have abnormal sensation, numbness of limbs and other symptoms. 3. Herniated lumbar disc: when the patient lumbar disc herniation is serious, it will compress the nerve roots or spinal nerves, which will lead to numbness or pain in the lower limbs, causing the patient to sleep at night, especially when the leg is straightened out, which will be manifested as an uncomfortable feeling in the legs and feet. The patient’s feet feel uncomfortable when sleeping at night and always feel like there is no place to put them, so he needs to actively consult the doctor and follow the doctor’s instructions for reasonable treatment.