The nonlinear spectroscopic experiments were carried out that femtosecond laser pulses generated by Ti: sapphire laser are used to pump high nonlinear double zero dispersion photonic crystal fibers. When the central wavelength of the pump pulse is 800 nm, in the anomalous dispersion region, the ultra-wide bandwidth continuous spectral output from the double zero dispersive photonic crystal fiber is observed. Compared with that of the single zero dispersive photonic crystal fiber, double zero dispersive photonic crystal fiber has higher conversion efficiency, stable and smooth spectral band. Both the high efficiency blue shifted dispersive waves and the broadband red shifted dispersion wave in the normal dispersion region at long wavelength are obtained. Consistent with the phase matching condition of theoretical analysis, the physical mechanism of the phase matching is clarified. With the increase of pump power, the long-band dispersion wave has a significant shift to long-wave band and the short (visible) band dispersion wave intensity increases significantly. When the pump power is 0.68 W, the pump is almost completely converted. The ratio of blue shift dispersion wave to residual pump output power is 257∶1, and the efficiency of spectral conversion is as high as 99.6%. The blue shift dispersive waves has a wide band of 309 nm, and the red shift dispersive waves in near infrared band is connected with the soliton wave to form a supercontinuum spectrum with a bandwidth of 628 nm. The experiment results have reference value for the study of ultrashort pulse laser frequency conversion and broadband light source.