The cost of the scheme can be reduced by selecting the appropriate test method and result of wax appearance point (WAT).The WAT of high pour point oil in SY and KF oilfields under different conditions was measured by four test methods.The results showed that the WAT measured by microscopic observation,differential scanning calorimetry,laser and rheological methods decreased in turn. It can be divided into the crystallization temperature,critical wax deposition temperature and deposition influence temperature according to the test conditions.The WAT was independent of wax content,and was greatly influenced by high carbon paraffin.The WAT of live oil near saturation pressure was the smallest,which decreased by 9 ℃ compared with the degrassed crude oil.When the pressure of degrass crude oil increases from 0.1 MPa to 24 MPa,the wax evolution temperature increases by 3.1 ℃.The WAT decreased by 2.9 ℃ when the shear rate of live oil increased from 10 s-1 to 1 191 s-1 under the same pressure.Influenced by the asphaltene deposition, the deposition temperature is higher than the critical wax deposition temperature when the pressure was lower than 15 MPa.The rheological test results meet the engineering needs, and the activation energy method can be utilized to deal with the experimental results.This study can provide theoretical and technical support for the selection of WAT in engineering.