Modularized movable noise reduction fence

The modularized movable noise reduction fence comprises a plurality of fence units, each fence unit comprises a concrete pier, an L-shaped groove is formed in the top of each concrete pier, an L-shaped baffle is placed in each L-shaped groove, a sound absorption foam cushion layer is arranged on the back face of a vertical plate of each L-shaped baffle, and the top of each concrete pier and the back face of the vertical plate of each L-shaped baffle are fixed through an L-shaped fixing rib plate. A first fixing hole is formed in the end of a vertical plate of the L-shaped baffle, a prefabricated convex body and a prefabricated groove are arranged at the two ends of the concrete pier correspondingly, a second fixing hole is formed in the prefabricated convex body, a third fixing hole penetrating through the concrete pier is formed in the prefabricated groove, and a steering pulley is fixed to the bottom of the concrete pier. The prefabricated convex body of one fence unit is inserted into the prefabricated gro