With the development of global industrialization and increasing population, the atmosphere environment has been a serious problem. NO2 and aerosols play an important role in atmosphere chemistry. Ground-based multi axis differential optical absorption spectroscopy(MAX-DOAS) has been successfully applied in the measurements of the trace gas vertical column density(VCD) and aerosol optical depth(AOD). NO2 VCD and AOD were measured based on MAX-DOAS in Hefei City during the open stalk burning period. NO2 VCD was compared with the result of OMI, and results of AOD was compared with sunphometer(CE318). It showed that NO2 concentration measured by MAX-DOAS was 1.9 times higher than the result of Ozone Monitoring Instrument(OMI), and both instruments had good accordance during clear days. The correlation coefficient between AOD measured by MAX-DOAS and that by CE318 is larger than 0.9.