Brought forward the conception of conventional MS monitoring, and described the different monitoring ranges of frequencies and magnitude about earthquake and conventional MS monitoring and MS monitoring in detail. The monitoring results received by the Polish ARAMIS M/E monitoring system and the monitoring instrument designed by the author\'s research group in the same colliery show that the events amount received by conventional MS monitoring instrument which is only about 1/20 of the MS monitoring events, and it can only describe violent activity in larger range and be only applied to monitor hard and thick surrounding rock under mine. Meanwhile the small scale and high precision MS monitoring instrument can receive a lot of low rock fracturing signals, which can actualize the rock movement inversion and precisely describe 4-D changes of stress fields, and depend on the observed results we can determine the upper limits of mining and describe S-shaped strata spatial structure and high stress field in Iongwall face surrounded by two sides mined areas.