We report a micro-laser power meter, which is made of silicon photoelectric cell for measuring the laser power from micro-focus systems. The power meter has the characteristics of wide spectrum response, excellent linearity, high sensitivity, good stability, fast speed, and convenience for using. The micro-laser power meter, can be placed on the platforms in different kinds of microscope, even in the solutions of culturing biological samples, to measure the laser power projecting on samples for simulating the real environment and position of the samples. It is also suitable for the measurement of different wavelengths and different power levels (from 1～50 mW) of light.