Objective To analyze and evaluate the corrosion resistance and antiscaling performance of TK70 and DPC coated tubings in the CO2 corrosion environment of a field in Ordos Basin. Methods Corrosion conditions of CO2 oil displacement in oilfield were simulated. Corrosion resistance test and anti-scaling performance test were conducted by a high temperature and pressure vessel. Samples of TK70 and DPC coating tubings (covered & uncovered tubing) were analyzed and evaluated. The morphology characteristics of the two samples before and after high temperature and high pressure vessel test were compared. Then corrosion characteristic and energy spectrum analysis was carried out for corrosion tubing. Water produced in eight wells was used as the so-lution of the corrosion medium to have an indoor coupon corrosion test. Then comparison was made between the average corrosion rate of TK70 coating and common J55 tubing sample. Results There was a serious local corrosion in the inner wall of the tubing. Energy spectrum analysis showed corrosion products were mainly FeCO3 and a few sediment of CaCO3. Corrosion resistance test showed the two kinds of inner coatings had no blister or edge peeling and had good corrosion resistance. The water produced from the eight wells was used as the test medium. The average corrosion rate of common J55 tubing and TK70 coated tubing specimens (uncovered) was respectively 0.145~0.363 mm/a and 0.015~0.059 mm/a. Scaling on coating surface was not obvious but that on the metal substrate surface was obvious. The loss rate of Ca and Mg of test medium solution was respectively 231.77% and 796.51%. Scaling could be prevented by coating to a certain extent. Conclusion TK70 and DPC coated tubings have good corrosion resistance and anti-scaling performance. Average corrosion rate of TK70 coating tubing meets the required standard value ≤0.076 mm/a in simulated conditions. It enjoys good applicability in CO2 corrosion environment.