Hydrology for bridges and culverts is mainly based on the river and hydrological environment and other factors for bridge design, which is an important basic work of bridge site environmental design. By reviewing the development of hydrology for bridges and culverts in recent years, some key issues from hydrology of bridges and culverts, such as research methods, design flood discharge, causes of bridge foundation scour and influencing factors, and calculation of the scour depth of bridge piers and abutments, elaborated the development achievements of hydrology for bridges and culverts and briefly summarized the current difficulties and future hotspots.