The Relationship Between Neutrino and Gravitational Dark Matter

This paper discusses the neutrino field in space. The principle that the neutrino field can form quantum gravity field is proved based on the fact that neutrino has concussive energy. The neutrino energy density is derived according to the disappearance of solar neutrino. The conclusion neutrino field is dark matter is deduced, and four challengeable questions are answered based on a simple intuitive physical model.