Abstract: After nanofluids has good heat transfer applied to the field of heat transfer enhancement,become a hot topic in materials,physics,chemistry,heat transfer,and many other fields.This paper summarizes the progress of the basic properties of nanofluids from these aspects include preparation and dispersion stability,thermal properties and rheology properties,anti-rust anti-wear performance.Indicate nanofluids study is still in the experimental stage study,the fundamental properties of nanofluids only study from experiments.On the basis of experiments,only propose associated hypothesis mechanism,did not form a eomplete theoretical system to make a summary of nanofluids related perform ance.Needs to be more research, so as to form a relatively complete theoretical system of the basic properties of nanofluids.