The invention discloses a vertical forced synchronous motor drive device for a semi-flexible wall throat block of a nozzle section of a continuous transonic wind tunnel. The vertical forced synchronous motor drive device disclosed by the invention is used for realizing a planar three-degree-of-freedom motion of the semi-flexible wall throat block of the nozzle section of the continuous transonic wind tunnel. A guide element such as a guide rail slide block and a drive element such as a servo motor are vertically arranged, an integrated sliding table is adopted to ensure synchronism of the samedrive group in a forced manner on the mechanical level, and a mechanism principle of the whole vertical forced synchronous motor drive device for the semi-flexible wall throat block of the nozzle section of the continuous transonic wind tunnel in a longitudinal plane is a planar three-degree-of-freedom mechanism. The vertical forced synchronous motor drive device disclosed by the invention has the characteristics of being excellent in integral rigidity, simple in structure, reusable in space, capable of eliminating lateral force, high in synchronization precision, high in driving load, high in stability, high in impact resistance, high in safety and reliability and the like.