With the aid of micromanipulator, precise physical interactions, like single cell collection, injection, patch clamping, etc. under microscopic level becomes achievable. In general, depending on the application, one or more micromanipulators can be docked on a microscope stage to operate in microscopes field of view. Here we present a typical procedure for single cell collection, including steps of cell aspiration and discharge. Instruments adopted here is MMO-203 Three-axis Oil Hydraulic Micromanipulator from NARISHIGE Group.