The discovery of rotating radio transients (RRATs) has been nearly 20 years, but their origin is still unclear. We have collected in total 182 RRATs, and the RRAT database has been updated. The statistical analysis of the observational parameters of RRATs, such as location, period, period first derivative, dispersion measure, distance, characteristic age, characteristic magnetic field, Faraday rotation, and linear polarization degree. It was found that except for Faraday rotation, the logarithms of all other observed parameters followed a normal distribution. Compared with pulsars, the spatial location of RRAT sources is similar to that of pulsars, and the average values of period, period derivative, and surface magnetic field are slightly larger than those of ordinary pulsars. The characteristic age and Faraday rotation are within the normal pulsar range, and the rotation energy loss rate, dispersion value, and distance are smaller than those of pulsars. These results are of great significance for studying the physical origin of RRATs.