Machine vision plays an important role in measuring and controlling for laser robot processing. Based on CCD/CMOS, three kinds of machine vision systems for laser remanufacturing robot are developed to reconstruct of 3D-CAD part, temperature field and powder stream field. Their parameters are as follows: scanning width is 200 mm, scanning speed is 10~50 mm/s, deviation is less than 1 mm in 3D-CAD part; measuring temperature regions are 700 ℃~2400 ℃, deviation is less than 50 ℃; measuring powder stream rate regions are 1~100 g/min. They all can realize a real time and online testing and are available in laser remanufacturing robot processing.