We took Beijing as the study area in the northwest region,and calculated the fixed point strain observations data with strain parameters and obtained their time series as the research object. We carried out the consistency analysis between the results and the results are of the focal mechanism solution of small earthquakes of the same period in the research zone. The result shows that there is a good correspondence between the tensile properties of fixed-point observation maximum direction of the principal strain and the focal mechanism solutions of maximum tensile deformation direction(axis T). The general direction is NNW to NE. The maximum principal strain direction and focal mechanism solutions of maximum tensile deformation direction both showed an eastward migration arranged in the direction from west to east,which matches the clockwise activities of the northern North China Block. The result further proves that the strain observations can reflect the regional strain field information.