In this paper, 6 local hail weather processes in the Yellow River Estuary in June 2019 are analyzed using conventional data, Doppler weather radar products, densified automatic meteorological observation data, and the 5th generation of ECMWF atmospheric reanalyses dataset (ERA5). The results are as follows. 1) The 6 hail processes are produced under favorable environmental conditions, and the large-scale synoptic systems are cold vortex and transverse trough in Northeast (North) China and upper-level trough over middle latitudes. When the hail falling process is about to occur, there is temperature inversion in the lower troposphere and convective inhibition. The convective available potential energy is above 1 000 J·kg-1 and the surrounding environment is relatively dry; the thickness between the 0 ℃ layer and the -20 ℃ layer is between 1.8 km and 2.3 km, which is lower than the empirical value. 2) There is a rapid increase in maximum composite reflectivity (MaxREF), echo top (ET), and vertically integrated liquid (VIL) during the occurrence and development stage of hail storm. The ice water content is more with rapid accumulation, the liquid water content is less, and the rain water content is the least in the air column of the 6 hail storms, so most of them are accompanied by weak precipitation during hail falling. 3) The middle-layer wind field of storm cloud is characterized by horizontal shear and vertical shear of radar radial wind, while in the lower troposphere, it is characterized by wind direction convergence and wind speed fluctuation. 4) Most of the 6 hail processes occur in the coastal areas of the Yellow River Estuary, the special topography of which is beneficial to form mesoscale convergence line of wind field in the lower troposphere. Under the favorable circulation background, it is easy to trigger local convection or make the ingoing hail cloud develop rapidly, which is the reason for frequent convection in this area.