Abstract: In China now, no high pressure turbine flowmeter is developed independently, and turbine flowmeter and flowrate computer used for trade measurement is highly demanded for long-distance, large-diameter and high pressure natural gas pipelines, such as West-to-East Gas Pipeline, and Sichuan-East Gas Pipeline. Accordingly, TBQM high precision and high pressure turbine flowmeter and FC flowrate computer are developed. This paper presents the working principle and performance test of the TBQM high precision and high pressure turbine flowmeter, including durability test, bending moment and torque test, short-time overload test, disturbance test, and high/low temperature performance test. The FC flowrate computer can be connected to four flowmeters. It has the function of energy measurement and is equipped with the RS485 communication interface to receive component analysis results from gas chromatography. To further verify the accuracy and reliability of TBQM high precision and high pressure turbine flowmeter and FC flowrate computer, industrial field tests have been carried out in Zhenjiang Offtake Station, Chuzhou Offtake Station, and Qingshan Offtake and Pigging Operation Station respectively for more than half a year. The results show that all the indexes and technical performance can meet the requirements of industry trade measurement.