The 2002-2007 radar data and observations from Jiangxi were examined statistically to determine the correspondence between surface hail and the threebody 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 nearzero or weak inbound velocities. Spectrum widths are very broad and often noiselike. It is found almost exclusively aloft in the midlevels (4-9 km) and then to descend with hail descent. A distinct advantage of the TBSS as a warning criterion is a leadtime 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.