Reduce sensitivity of object selection

Hi , I am wondering that is there any way to reduce the range of selection ?
Because it is to easy to select object , as you can seen 2 pictures below, my cursor was not even touch the object. However I can select the object. And it is too annoy to my work.

Any suggestions are appreicated !

! -_Options _ModelingAids _MousePickBoxSize


Thank you!
It is totally what I want , it work well