| Hanhe-Huachi Formation | |
| Type: | Geological formation |
| Prilithology: | Mudstone, sandstone |
| Region: | Gansu |
| Country: |  China |
| Unitof: | Zhidan Group |
| Underlies: | Luohan Formation |
| Overlies: | Luohe Formation |
| Thickness: | 400-500 metres |
| Period: | Hauterivian |
The Hanhe-Huachi formation, also called Huachi-Hanhe formation is a geologic formation in China. It is Early Cretaceous, probably Hauterivian, in age.[1] The Pterosaur Huanhepterus has been recovered from the formation.