Expanding transmission capacity has become the primary task for the development of modern optical communication technologies. The 2 μm band belongs to the human eye band and has an atmospheric communication window, which is an area in which optical communication systems need to be developed in the future. Compared with quartz glass, soft glass material has a wider light transmission range and can be extended to the mid-infrared band, which is suitable for the 2 μm band optical communication system. Hollow core photonic bandgap Fiber (HC-PBGF) provides a unique light guide mode due to the existence of fiber bandgap. HC-PBGF has a flexible fiber structure, low loss and controllable dispersion characteristics. It is a very suitable transmission medium for optical communication. A 7-cell HC-PBGF is designed, and the characteristics of dispersion, mode field area, limiting loss and bending loss of the fiber are simulated and analyzed.