Abstract: Discussed in the paper are the buried heated pipeline's own elastivity and the adaptability of the corrosion protection and insulation structure when there is an insulation coating. To make the pipeline obtain soil constraining force so as to guarantee pipeline stability, material selection and the structure of corrosion protection and insulation coating should be based on the strength of the insulaion and protection coating, cohesion between layers as well as the cohesive strength between the steel pipe and the corrosion protection coating. The study of synchronization of heat expansion and cold shrinkage is carried out on the basis of the tensile and compressive strength, heat expansion property of corrosion protection and insulation materials, and also on the basis of cohesion between layers so as to prevent insulation coating from slipping, prevent corrosion protection and insulation coatings from cracking when the pipe deforms because of being heated. From field inspection on thickened oil pipeline, the two adopted corrosion protection and insulation structures and their materials can meet the stability requirements of buried pipes' insulation structure. The corrosion protection and insulation coating can pass the soil constraining force to the pipe so that no slipping or cracking will accur, the polythylene protective coating of high density remaining unchanged.