The invention discloses an urban 
storm flood monitoring and traffic controlling and guiding 
system and method. The urban 
storm flood monitoring and traffic controlling and guiding 
system comprises a 
water depth data collecting and rectifying unit, a unit for analyzing and predicting 
water depth and on-off control of a drainage pump 
station and an early warning issuing and traffic controlling and guiding 
processing unit. The 
water depth data collecting and rectifying unit is used for performing comparison and check analysis by collecting water depth data of different types at water accumulating spots and obtaining water depths at the water accumulating spots. The unit for analyzing and predicting water depth and on-off control of the drainage pump 
station is used for performing 
trend analysis and rolling correction on the water depths of the water accumulating spots by combining zone rainfall data of surrounding rainfall stations on the basis of the water depths obtained by the water depth 
data collecting and rectifying unit and achieving automatic on-off of a drainage pump unit according to an accumulating water depth predicting curve. The early warning issuing and traffic controlling and guiding unit is used for 
processing obtained traffic controlling and guiding information and sending the information to a controller and early warning and instructing pedestrians and vehicle drivers in various manners according to safety pass standards of water-accumulating roads. The urban 
storm flood monitoring and traffic controlling and guiding 
system and method have the advantages of being reliable in data, stable in communication, comprehensive in function, professional in handling and the like.