Based on the basic and inversion parameters of wind profiler radar and conventional meteorological data, the mixed severe convective weather in central Guizhou on March 16, 2023 was analyzed, with a focus on the detection capability of wind profiler radar on severe convection and the approaching warning index. The results showed that: (1) This process was triggered by the surface convergence line and the cold front under the joint action of upper trough, low-level shear line, low-level jet stream and favorable environmental conditions. The horizontal wind field of wind profiler radar can detect the accurate transit time of trough line, shear line and surface cold air, as well as changes of low-level jet streams, which has obvious advantages over conventional surface and high-altitude data. (2) The temperature advection and vertical wind shear products inversed by wind profile radar can reflect the stratification instability and strong vertical wind shear characteristics in the surrounding environment of hail area, as well as the strong cold advection intrusion and deep and strong vertical wind shear characteristics in the whole layer during heavy precipitation. The disappearance of low-level jet index after a sudden increase indicates the occurrence of short-term heavy precipitation; (3) Vertical velocity ≥ 4 m?s-1, spectral width ≥ 1 m?s-1, refractive index structure constant(Cn2) ≥ -130 dB, and signal-to-noise ratio(SNR) ≥ 50 dB can be used as the boundaries to distinguish whether there is precipitation or not, and vertical velocity and spectral width are helpful to distinguish between convective and stable precipitation stages.