Urban wetlands are decreasing and the wetlands are converted to construction land with the rapid development of urbanization. The possibility of urban waterlogging is increasing with the risk increasing across the process. South Lake wetlands in Wuhan is selected to analysis the process and drivers of urban wetland loss and the relationship between the loss and the waterlogging with RS and GIS technology, based on multitemporal satellite remote sensing data between 1988 and 2015. Research results show that: (1) the area of South Lake wetlands had fallen off from 1988 to 2015 and the total of the wetland reduced 1 563 ha. The rate of the loss was decreased obviously with certain fluctuation in the region, which could be divided into four phases: the processes of slow decrease (1988-1996), sharp decrease (1996-2004), slow decrease (2004-2010) and static (2010-2015), at the average loss amount of 35.3 ha, 135 ha, 30 ha and 5.4 ha each phase respectively. The loss started from the north of South Lake and the south of the area was to an end. (2) Residence was always responsible for the loss wetlands and about 52% loss areas were converted to residence land which had a total area about 803 ha.  (3) By combining datasets wetland loss and waterlogging from authoritative and reliable media data, it was found that 85.7% of the identified occurred waterlogging disaster points were located in the area used to be wetlands. The ability of wetlands to store water declines because of the low elevation and the increasing amount of impervious surface in the area used to be wetlands. And the loss area of wetland is more vulnerable to waterlogging and floods in higher rainfall days.

Key words：urban wetland; the loss of lake; waterlogging; South Lake