Hello, taxi meter jd2 is out of date due to paper shortage, printer failure, company management and metering management. For these reasons. Taxi meter is a compulsory measuring instrument, which can continuously accumulate and display the payable expenses at any time during the taxi driving. Because of the poor use environment, it often breaks down. Based on the working principle of taxi meter and my working experience, this paper briefly analyzes the common faults and maintenance methods of taxi meter.