Abstract: The quantum transform of international unit system has occurred.With the development of the technique that cooling atoms by laser,the quantum vacuum measurement methods based on cold atoms has become the breakpoint in the measurement of ultrahigh and extremely high vacuum range.In order to realize the quantum transform of vacuum metrology technique in our nation.The article analyzed the theory of the vacuum measurement method based on cold atoms.Except that,the international development of this technique also was summarized in it.Lastly,the device designed by our research group was introduced in this article briefly.In a word,the quantum vacuum measurement method based on cold atom has unique advantage in the research area of ultrahigh or extremely high vacuum measurement,and it is the hot point of quantum vacuum metrology in this vacuum range.Combine the device based on cold atoms and ab-initio method,it would be the technique which has great hope to become the original vacuum measurement standard in ultrahigh and extremely high vacuum range.

Key words: Vacuum metrology, Cold atoms, Quantum, Laser cooling