This plan will execute a design of the powered exoskeleton of the lower limbs and knee. The external exoskeleton in the market is divided into various fields. we will focus on the field of Medical assistance and develop a wearable device only for lower limbs. The goal of the project is to help the person who is hard to stand up from the chairs, weak walk, go stairs difficulty. If these people using it, they will easily perform such actions by wearing this device.