The invention discloses a pavement prefabricating assembling quick repairing method suitable for southern hot and humid areas. The pavement prefabricating assembling quick repairing method suitable for the southern hot and humid areas includes the following steps that (1) prefabricated repairing material boards are prepared; (2) a broken pavement region is cut and grooved, a whole paving layer isremoved until an original concrete base face is exposed, and foreign matter in an opened groove is removed; (3) the bottom of the opened groove is leveled, pits in the bottom of the opened groove arerepaired through epoxy resin concrete, and then the bottom of the opened groove is leveled through dry-mixed mortar; and (4) the prefabricated repairing material boards obtained in the step (1) are installed in the leveled opened groove, the opened groove is sealed through modified epoxy region concrete, the concrete is cured for 2 to 4 hours, and then the pavement can be opened for traffic. By the adoption of the method, operation is easy, traffic closing time is short, the construction quality is easy to control, durability is good, and maintenance cost is saved.