This paper is aim to estimate SPAD value of apple leaf using hyperspectral red edge parameters. With Fuji apple leaf of different phenophase as the research object, hyperspectral reflectance and SPAD value were measured by the ASD FieldSpec 3 spectrometer and the chlorophyll meter SPAD-502, respectively. The hyperspectral characteristic and variation rule of SPAD value were analyzed to florescence, spring shoots pause growth period, autumn shoots pause growth period and maturity period of apple. The correlations between the red edge parameters and apple leaf SPAD values were studied. The estimating models for apple leaf SPAD value were established. The results showed that the variation rules of reflectance curve waveform of apple leaf were similar to different phenophase.The leaf SPAD value increased gradually from the start of florescence and reached to the peak in the autumn shoots pause growth period, and then began to decline. The experience estimating models were established between the hyperspectral red edge parameter λr and leaf SPAD value and the correcting models were built to leaf SPAD value based on partial least squares in different phenophase. The best estimating effects of their models were the autumn shoots pause growth period. The test accuracy of their models was 94.2%, and 96.7%。The stability and precision of apple leaf SPAD value estimation model is higher by partial least squares. This study provided theoretical basis and technical support in the application of apple leaf chlorophyll content using hyperspectral remote sensing for the rapid, non-destructive estimation, nutrition diagnosis and efficient management.