A kind of one-dimensional doped photonic crystal with fractal characteristic is constructed and investigated. Numerical results show that such a structure can produce multiple transmission channels, and each channel can be tuned independently. By changing the number of the defects inside the coupling layers, the number of the narrow-band transmission peaks inside the channel can be tuned. As the frequency of a transmission channel changes, all transmission peaks in the channel will also shift, while the frequency interval of these peaks remains nearly invariant. These fractal structures are useful for the design of multichannel filters.