Dynamically controlled photonic band gaps was achieved via the electromagnetically induced transparency in the 1D optical lattices filled with cold atoms driven into a four-level N configuration.In this system,the trapped atoms have a Gaussian density distribution in each optical lattice,which make the refraction of the media is periodically modulated in space,then the probe field propagates as in Photonic crystal.The numerical calculations show that:the two windows based on double dark states arise and when the Bragg condition is fulfilled the densities of photonic states reduce and well developed photonic band gaps can be opened up.In addition,the induced photonic band gaps structure,the widths and positions,can be controlled via tuning the intensities and detunings of the two coupled fields.