The basic concepts and principles,experimental schemes and results as well as recent progress of manipulation and control of cold neutral molecules and their geometric moleculeoptical devices in the world are introduced. These contents mainly include: electrostatic guide of cold polar molecules and its molecular pipe,laser deflection(refraction)of neutral molecules and its molecular prism,laser focusing of neutral molecules and its molecular lens,electrostatic and magnetic reflection of neutral molecules and its molecular mirror,and laser rotation manipulation of cold molecules and its optical centrifuge,and so on.