It is to discuss the processing methods of observation data and to analyze the relation between meteorological elements and observation data by means of the daily measurement from three weighing wireicing automatic observation stations in Ya’an, Aba and Garza, Sichuan Province from February 4 to February 5 The results show that the wavelet filtering method based 〖WTBX〗T〖WTBZ〗value has a good filtering effect for weighing data and it is possible to effectively suppress the noise in the original observation data and retain the characteristic information of the data change. According to the degree of grey comprehensive relation between meteorological factors data and weighing wire icing data, the sequence is: temperature, atmospheric pressure, and wind speed with the relation degree being between 0516 and 0632 The analysis of wind direction rose diagram shows that the growth of ice accretion on the windward side is larger than that in the downwind direction.