Abstract: Commonly cultivated high quality elite rice cultivar “Jiafuzhan” was used to study molecular behavior ecological mechanisms in functional leaves of rice seedlings through investigation on their response to daily changes in sunlight intensity (from 6: 00 to 18:00). The results reveal 7 proteins with regular patterns of daily change in expression abundance and 6 of them are successfully identified and predicted. The proteins are chloroplast photosystem I reaction center subunit II－proteinoid (spot 1 protein), UMP/CMP kinase b (spot 2 protein), OSJNBa0027P08.12 protein (spot 3 protein), putative reductase (spot 4 protein), putative chaperonin (spot 5 protein) and putative sesquiterpene cyclase 1 (spot 6 protein). Expression abundance of all identified proteins drop at mid-day (12:00 ~ 14:00), except for spots 2 and 3 proteins. This implies that the molecular behavior ecological properties are related to deferentially expressed protein abundance in functional rice leaves in response to changes in daylight.