My axes line layer is not straight in sight. How can I fix this problem.
There’s no “axes line layer”. What I see if the effect of a wide field of view in Perspective. You can narrow the field of view by selecting the Zoom tool from the toolbar and then typing in either a lower number for the angle of view or a longer focal length by add mm after the number.
Or maybe you want to look at the model in Parallel Projection which can be selected in the Camera menu. Generally modeling in SketchUp is easier in Perspective, though.