In present scenario wheelchair is  used by physical challenged persons for mobility, but traditional wheelchairs are restricted in stairs and off-roads. Track chains are used in army vehicles for their extreme riding performance in off-roads and it needs less power compared to normal tyres. In our project we discuss about the latest technology of MEMS (Micro-Electro-Mechanical System) for the purpose of stair climbing with the aid of track chains for physically challenged persons and this project works under MEMS technology.