A novel superstructure fiber Bragg grating (SFBG) combfilter for multiwavele ngth laser is proposed. This SFBG is characterized by its singlegrating struct ure, both refractive index modulation and local chirp abundant in variation, sym metri cal reflection peaks, narrow bandwidth and standard channel spacing. Based on layerpeeling inverse scattering technique, adopting independent channelbycha nnel apodizingwindowing method rather than integral apodizingwindowing proce dure, the desired SFBG is figured out successfully. The fa brication techniques for this SFBG are discussed as well. Reflection spectrum, group time delay and group time delay ripple are analyzed by the method of transf ormation matrix. The results show that this SFBG satisfied all requirements of designing target. In DWDM optical fiber telecommunication systems, this novel SFB G is a promising candidate for the perfect high performance combfilter used in multiwavelength laser.