According to earthquake catalog records of the Fujian Seismic Network，the Tnow method and the Four Stations Continuous Location method put forward by Jin Xing are inspected by using P-wave arrival information of first four stations of each seismic event． It shows that the two methods for earthquakes within the network can obtain near location results and small location deviations of the majority events． For earthquakes outside the network，the location deviation may amplify as the epicentral distance enlarges，owing to the seismic station distribution which spread toward the side of epicenter and the small opening angle between seismic stations used for locating and epicenter． For the Four Stations Continuous Location method，the impacts of the wave velocity on the location results may be significant for earthquakes outside the network，selecting a velocity model which is similar to actual structure of the wave velocity will contribute to improving location results of earthquakes． The Four Stations Continuous Location method can locate more seismic events than the Tnow method． It concludes that the Tnow method makes use of mistake information from several triggering stations in earthquake catalog，due to discontinuous records or unclear records of seismic phase，which induces incorrect locating，which may due to the fact that the Tnow method makes use of information from stations without triggering．