The 2002-2007 radar data and observations from Jiangxi were examined statistically to determine the correspondence between surface hail and the threebody scatter spike (TBSS). We have discussed its operational use as a large hail (≥19 mm) warning criterion in Jiangxi. The result indicated that TBSS as large hail indicator is of very good application significance. The probability of detection (POD) using the TBSS is 0.818. The false alarm ratio (FAR) is 0.182 for large hail. And the critical success index (CSI) is 0.692. As in the previous studies, the TBSS is an echo region aligned radially downrange from an intense reflectivity core and is usually characterized by low reflectivity and nearzero or weak inbound velocities. Spectrum widths are very broad and often noiselike. It is found almost exclusively aloft in the midlevels (4-9 km) and then to descend with hail descent. A distinct advantage of the TBSS as a warning criterion is a leadtime of up to 77 minutes. The TBSS has various appearances and occurs at different elevation with the distance changing. In brief, the TBSS is an effective large hail criterion.