The invention discloses a method for dynamically tracking the position of a trolley of a rotating type annealing furnace. When a current trolley rotates, through mutual triggering of a stopper mounted at the bottom of the current trolley and an approach switch mounted on a furnace region, acquiring a coding signal of the current trolley; then through analysis of the code signal by a PLC, acquiring the number of the current trolley; then comparing the number of the current trolley with a theoretic number of the current trolley obtained through calculation by a server, and detecting whether the number of the current trolley is right or not; and if yes, further determining the position of the current trolley. Therefore a method of combining actual number measurement and a theoretic number measurement is adopted, and the two measuring manners are mutually independent and are in mutual reference, so that the tracking accuracy and the tracking reliability of the trolley of the rotating type annealing furnace are improved.