By collecting hydrogeological conditions and land subsidence monitoring and other data in the Langfang urban area, groundwater funnel change and land subsidence development are analyzed, and the response relationship between the groundwater funnel and the land subsidence in the Langfang urban area is studied. First of all, deep groundwater is the main source of water in Langfang urban area, water supply quantity shows an overall upward trend in 2001-2015, the production water and household water account for the main part, Groundwater funnel is formed by long-term exploitation of deep groundwater, and the funnel section is V-shaped. Secondly, based on InSAR technology, the subsidence rate of most urban areas in Langfang City is more than 60 mm/a, and locally up to 80 mm/a. Moreover, the response relationship between the change of groundwater funnel and the land subsidence shows that the groundwater funnel basically coincides with the center of land subsidence, the groundwater level exploitation increases. The increase of groundwater level exploitation results in the decrease of deep water level, which leads to the increase of land subsidence rate and the influence scope. The decrease of groundwater level is the main factor affecting the ground subsidence in this area. At the same time, the increase of the architectural complex load also has a negative impact on the ground subsidence. Therefore, the study on the response relationship between land subsidence and the groundwater funnel provides a theoretical basis for the prevention and control of land subsidence disasters.