Conventional manual career carts personally used do not have power units, and they often have small tires. A leading operation becomes difficult in case these are used in an unevenness intense road surface and a place with a level difference. Moreover, on stairs, continuous leading operation becomes impossible. Thereby, it is necessary to raise up and carry. In this research, the compact carrier cart to which the control theory of inverse pendulum is applied in order to reduce a lead person's physical workload sharply is developed, Stabilization by inverse pendulum control, the control system design and systems development which secures the flattery nature to lead operation of a user are studied.