In this report the design and fabrication of mechanism for emergency exit in building is introduced. For escaping in high rise building is very important in case of fire, terrorist attack accident or any other cases. This machine is intended to provide an evacuee with an alternative evacuation route that is only to be used as a last resort during emergency situations. If the primary roots of exit are unavailable overwhelmed or obstructed in any way. There is a better way than waiting to be rescued. Experiment of this prototype machine shows that this equipment can release escape the person in time and bring evacuee more safety and escape efficiency. This machine is developed to provide the user and serve ability into the building evacuation system when the stairs and elevators are not possible or damaged. It gives the individual a chance to make their escape from a building in the critical minutes before rescue services arrived. The machine which we have designed here is suitable for any age group or any weight. This prototype is designed for 100 kg load, the machine is equipped with unique governor mechanism for downfall speed control and speed can be adjusted instantly. The machine is reusable again and again, any quantity of evacuee can escape through this machine. Experiments of its prototype in results, shows that this equipment can release evacuee on time with safety.