In the process of oil transfer measurement, temperature directly affects the K value (volume correction coefficient of temperature) and the accuracy of flowmeter calibration, and therefore directly affects the oil transfer measurement errors. On base of the analysis on the causes and course of the pipeline wax, it is pointed out that the wax precipitation is the main factor causing temperature measurement errors, and we put forward effective prevention and treatment measures to ensure the measurement accuracy handover, reduce the transfer disputes, and safeguard the economic interests of all parties concerned.