A wavelength-tunable and strongly dispersion-compensating photonic crystal fiber based on a hybrid structure of dual-concentric-core photonic crystal fiber (DCC-PCF) structure and depressed-clad photonic crystal fiber (DeC-PCF) is proposed. To enhance the dispersion compensation effect, we used a hybrid structure of DCC-PCF and DeC-PCF as a basic structure. In the central core of the hybrid fiber, different kinds of liquid with various refractive indices are filled into the air hole with appropriate diameter. The numeric results show that the operation wavelength is determined by the refractive index of the liquid.