Abstract: In 2022，a rare phenomenon of 'drought in flood season' occurred in the Dongting Lake.The hydrological situation in the lake area changed greatly，which advanced the exposure of large beaches and flats in Dongting Lake area，exerting a certain adverse impact on the beach wetland environment.Based on this，according to the latest measured data，the change characteristics of the beach area in the flood season of the lake area in 2022 were studied，and the impact of its changes on the wetland environment was analyzed.The following main understandings were obtained: The water level of Chenglingji Station from January to June 2022 was generally higher than that of the same period from 2003 to 2021.The water level of Chenglingji Station had continued to decline since July，and the water level had decreased from 30.4 m in early July to 19.43 m on September 30.In addition to the water level of Chenglingji Station in early October，the water level of the station had little change in other months.Compared with the same periods from 2013 to 2021，the beaches areas in the lake area increased by 340，680，860，660，510 km2 in each month from July to November 2022.The continuous increase of the beach area in the lake area had driven the Carex and Phragmites to the deep water area，resulting in a sharp decrease of the living space of submerged vegetation，which is not conducive to the growth and reproduction of plants with poor drought tolerance and the predation of birds feeding on fish and submerged plants.At the same time，once the water volume in the next flood season is large，it may lead to the outbreak of Microtus fortis.