Abstract: Investigations have been made on identification of erective, middle and loose varieties by multi-temporal and bidirectional canopy reflected spectrum. It indicates that canopy reflected spectrum has significant differences between reviving stage and jointing stage. Canopy reflectance at 800 nm was similar among erective, middle and loose varieties at erecting stage, which has significant differences for the ratio of canopy reflectance at 800 nm at jointing stage to the same wavelength of canopy reference at erecting stage (Ratio). The value of ratio was: loose varieties>middle varieties> erective varieties. The combination of ratio and canopy reflectance at 800 nm at erecting stage could be used for the identification of plant structural types based on the multi-temporal data. The reflectance of visible and near infrared bands at 15°, 30°and 45° field of view for the main viewing plane could be used for the identification of plant structural types based on bidirectional data. So, it is feasible to identify loose, middle and erective varieties of wheat by multi-temporal and bidirectional canopy reflected spectrum.