Abstract: The Yellow River Delta is a large estuarine delta with the shortest land formation time in China. Due to its special development background, unstable geological environment system and human activity influences, the land subsidence in the delta is relatively significant. This has caused many environment problems and posed a serious threat to the natural environment and socio-economic development. From the points of monitoring technology and genetic mechanism, the status of the land subsidence in the Yellow River Delta is reviewed systemtically. ①The land subsidence in the delta can be affected by a variety of factors, such as natural compaction of nascent strata, gravity compaction of anthropogenic constructions, reduction of terrestrial inputs from rivers, exploitation of groundwater and brine, exploitation of oil and natural gas, relative enhancement of oceanic dynamics, and so on. To have a clear understanding a more detailed and systemetcal study is needed, especially in the aspect of quantitative separation of the contributions of the anthropogenic and natural factors to the ground subsidence. Moreover, it is needed to conduct a comprehensive quantitative analysis with other disciplines such as geology, geotechnical, mechanics, mathematics, and so on. ② For the land subsidence in the delta, it is necessary to strengthen continuous monitoring of long spatiotemporal scale, historical cycle analysis and future judgment analysis, especially to pay more attention to the research on the long- and short-term incluences of sea-land interaction on land subsidence. ③The surveying, monitoring, precision studying and assessing of the land subsidence in the delta, as well as the monitoring of environmental impact, are still needed to be studied deeply, particularly in the aspect of coupling relationship between the coast erosion and the land subsidence. In the future studies of the land subsidence in the delta, more attention should be paid to the exploration of theoretical models and the practice of new techniques and methods; The mechanism study should be extended to multiple models; For predicting the disasters, the ground cracking, faults and ground fissures which are closely related to the ground subsidence should be investigated. In addition, more explorations and practical applications should be made of the effects of the ground subsidence on the socio-economic and environmental impacts. A comprehensive, systematic and in-depth understanding of the land subsidence phenomenon in the Yellow River Delta can provide a theoretical basis for the effective implementation of ecological protection and resource development in the delta and has important scientific significance and socio-economic value.