  This paper presents 13 color CCD intermediate-band spectrophotometry of a
field centered on the open cluster M48 (NGC 2548), from 400nm to nearly 1000nm,
taken with Beijing-Arizona-Taiwan-Connecticut (BATC) Multi-Color Survey
Photometric system. The fundamental parameters of this cluster are derived with
a new method which based on the comparison between the spectral energy
distributions (SEDs) of cluster stars and the theoretical SEDs of Padova
models. We find that the best-fitting age of M48 is 0.32 Gyr, the distance is
780 pc and a reddening E(B-V)=0.04 with a solar metallicity Z=0.019
