Detecting and studying the atmospheric wind field is one of the most important means of understanding the structure of the middle and upper atmosphere, among which meteor radar is a very good means of observing the atmospheric wind field. In order to better understand the characteristics of the atmospheric wind field in the mid-latitude Mesosphere and Lower Thermosphere(MLT) region, this paper uses the 2016 Beijing Meteor Radar inverted wind field data for research. Firstly, the change characteristics of the atmospheric mean wind field with time and height are studied, it is concluded that the zonal wind in the MLT area over Beijing from January to March is dominated by west wind, and for the meridional wind, south wind and north wind alternate significantly, but the north wind is still dominant. And then the atmospheric tidal wave at 90 km is studied. The law of atmospheric tide changes with time is obtained through the Lomb-Scargle power spectrum method and harmonic fitting. We found that the influence of tidal waves on the atmospheric horizontal wind field in the mid-latitude is mainly the half-day tide, followed by the day tide.