Based on the data from conventional observation, regional automatic weather stations, NCEP/NCAR reanalysis and radar echoes, the severe convective weather caused by a gust front in Shandong on 30 June 2016 is analyzed. The results indicate that the convection happens when the upper trough and subtropical high interact with each other and Shandong high and low layer are affected by southwestern air flow. The uplift effect from the gust front, ground convergence line and katallobaric center and the sudden temperature drop from the invasion of the ground layer cold air are key factors in triggering the convection. The process occurs under an unstable stratification where it is dry and cold at the upper level, wet and warm at the lower troposphere. The water vapour at the lower layer is abundant and wet layer is thick. It occurs in the center and right side of the high value region of θse 850-θse 500 and SRH. CAPE, temperature difference between 850 hPa and 500 hPa, WINDEX, and SWEAT index are indicative to the convective weather. The cause of no big hail is that the height of 0 ℃ layer and melting layer is higher. The stronger vertical wind shear from 0 to 3 km needs attention in the convection forecast. During the convection, in the front storm of the linear echo band there appears the gust front, which constantly triggers thunderstorm and several strong single-cell storms develop into supercell storm. Echo characters are the mesocyclones that have short duration, raised strong echoes, bounded weak echo zone, the divergence at the top of the storm, narrowband echoes, high value zone of radial velocity, etc. The moving speed of the storm is larger than the average wind speed of its bearing layer, which reduces the existence time of the supercell. In addition,storm parameters are related to the intensity of weather.