The invention discloses an electric forklift multifunctional control system based on a state observer, and relates to the technical field of electric forklifts. The electric forklift multifunctional control system comprises a central processing unit, a user center, a data comparison center, an execution center, a feedback center and a processing center, wherein the feedback center comprises the state observer and a data feedback module, and the processing center comprises a wireless receiving module, an MCU controller, a map generation module, a map simulation module, a Bluetooth module and mobile phone map software. According to the electric forklift multifunctional control system, the driving and lifting convenience of an electric forklift is improved, the distance, the driving speed and the lifting weight can be monitored in real time, the using effect is improved, the electric forklift can be prevented from being collided by external factors, the driving speed can be controlled, the lifting weight can be controlled, a layout map in a factory can be conveniently simulated, the specific position of the braking electric forklift can be conveniently found according to the simulated map, and the overhaul efficiency is improved.