In view of the foregoing, an embodiment herein provides an automatic processing unit for car storing and retrieving system for the multilevel park system. Specifically, the automatic processing car storing and retrieving system includes an integrated central car handling unit and microcontroller unit, wherein said integrated central car handling unit comprises at least one collection-delivery rack to carry the car; at least one up-down platform to move the car vertically; and at least one wheeled platforms to move the car in a circular movement. Further, the collection-delivery rack of integrated central car handling unit can move simultaneously in circular and vertical direction. Further, a method for storing and retrieving the car by using the integrated central car handling unit is also provided.