Abstract: Spectrum technique can rapid, accurate and non-destructive monitoring the growth status of rice in the field. It is an essential key technique to implement variable input in rice growth monitoring and precision management. On the basis of spectrum technique, monitoring character of rice growth (including leaf area index and biomass), bio-chemical parameters (including nitrogen nutrition and chlorophyll content) and water of rice were summarized and some ideas for further research were discussed in this paper, which could provide a technique support on improve precision management level and unit area grain yield in rice.