The invention discloses a two side clock synchronization monitoring method for a line protection and double end traveling wave range finding integrated apparatus. The method comprises the following steps: step 1, channel time-delay is calculated via a host computer; step 2, sampling time is adjusted via a slave computer according to sampling time of the host computer; step 3, clock jitter betweenclocks on two sides of a line is calculated via the host computer; step 4, whether the clocks on the two sides are synchronized is determined according to the clock jitter between the clocks on the two sides. Via the method, synchronization of two side sampling time of double end traveling wave range finding can be realized, clock jitter of the clocks on the two sides can be monitored in real time, consistency of the clocks on the two sides can be ensured, and reliability of double end traveling wave range finding can be improved.