A thorough analysis is made of the upperair sounding records after balloon explosion from the Sheyang station, and it is found that temperature differences between ascending and descending periods in the same air layer were a combined effects of frictional heating，hysteresis error，instrument failures，spatially and temporally varying temperatures， etc. Based on practical records， the approaches to evaluate frictional heating and hysteresis errors caused by the rapid descending of radiosondes are investigated, and the usage and potentials of applying this type of data to obtain more accurate meteorological information about the surrounding environment are discussed. Some suggestions are given about the radiosonde data after balloon explosion, such as using a parachute to decrease the descending speed so that more meteorological information can be acquired.