The invention discloses a method for nondestructively recognizing floor diseases and rapidly and micro-destructively repairing the floor diseases. The method comprises the following steps: detecting adisease area of a floor by using a ground penetrating radar, and detecting the bearing capacity of a foundation of the disease area by using a conical dynamic sounding device; forming a grouting holein the disease area of the floor on the basis of the bearing capacity of the foundation of the disease area, and carrying out grouting on the disease area by using polyurethane through the grouting hole; detecting the disease area by the ground penetrating radar and the conical dynamic sounding device after the disease area is subjected to grouting, and plugging the grouting hole after a detecting result meets requirements. The method has the advantages that the foundation of a disease position of the floor is reinforced effectively, secondary hollowness is avoided, and by huge expansion acting force generated by reaction, effective lifting repair on deformation or sedimentation caused by hollowness of the floor can be implemented.