Abstract: To study the spectrum features of the canopy reflectivity in the Malus sieversii during florescence,as well as to provide evidence for the extraction of the scattering of the Malus sieversii,we have taken West Tienshan National Nature Reserve as the research area,and made use of the portable FieldSpec®3 ground spectrometer to collect and analyzed the data of the spectrum of the ground canopy of Berberis thunbergii DC.,Malus sieversii,Crataegus cuneata Sieb.et Zucc.,and Armeniaca vulgaris Lam.,and reduced the noise of the data of the spectrum smoothly with moving average method.We have analyzed the features of the reflectivity of the four plants and the interpolation of the visible spectrum and the first derivative of the reflectivity,and obtained the specificity waveband of the spectrum with the first derivative of the reflectivity between 660 nm and 760 nm,so as to explore the parameter feature of the red edge of the plants.The results show that there is no obvious green peak in the spectrum of the reflectivity of the canopy of Armeniaca vulgaris Lam.during their florescence because it blossoms before it has leaves.The spectrum of the reflectivity of the visible light of different varieties of trees bears conspicuous differences.The order of the position of the red-edge of the four plants is as follows: Armeniaca vulgaris Lam.<Crataegus cuneata Sieb.et Zucc.<Berberis thunbergii DC.<Malus sieversii.The spectrum of the plants during fluorescence bears conspicuous features,which proves beneficial for the remote sensing extraction of the information of the plants.