In order to compensate the transmission limits of the high-speed signal caused by dispersion of the fiber, an all-solid dual-concentric-core photonic crystal fiber for dispersion compensation was proposed. Firstly, the mode coupling characteristics of the fiber was theoretically analyzed, and then multipole method was used to calculate the relationship between the parameters of the fiber and the dispersion value as well as the shift of phase matching wavelength, and the regularity was studied. Finally a dispersion compensating fiber with dispersion value of -32 620 ps/(nm·km) at 1 550 nm was achieved by optimizing the structural parameters of fiber, and numerical results also show that the loss is 0.29 dB/km and the splicing loss with SMF-28 fiber is 4.77 dB at 1 550 nm. The fiber can compensate 1 910 times the length of the SMF-28 single-mode fiber dispersion, its compensation ability is much larger than the conventional dispersion compensation fiber. The all-solid dispersion compensating photonic crystal fiber has the advantages of easy to fabricate and easy to splice with the traditional communication fiber compared with air-silica photonic crystal fiber.