Nitrogen dioxide（NO2） plays a very important role among the anthropogenic trace gas.The tropospheric NO2 ver-tical column density（VCD） maps derived have been used to study many scientific applications

such as pollution emissions and pollutant distribution.This paper reviewed the NO2 inverse algorithm

Differential Optical Absorption Spectroscopy（DOAS）

from satellite measurements

and also discussed the error analysis

validation and developing trends.Significant techniques are detailed for DOAS method

such as the ring effect algorithm

stratospheric NO2 concentration algorithm and air mass factor（AMF）.After displaying the different accuracies of NO2 retrieved from satellite measurements

uncertainties are discussed for model parameters including cloud

a-priori NO2 profiles

aerosol layer

and so on.There are many important issues needing to be improved.These include the tropospheric NO2 retrieval algorithm

geostationary air quality satellite

and validation from ground-based measurements

Multi-Axis DOAS

and aircraft-based instruments.