Self-floating electronic single shot inclinometer employs special self-floating carrier and mainly is used in the scope of measuring the attitude parameters of petroleum well engineering. It is designed to read and output inclination, azimuth, magnetic field intensity and temperature via the micro printer. TYE-SF employs self-floating carrier and can be conveyed to the position to be measured by launching the pump, and the instrument will be moved up to the well port with the help of self-buoyancy after the pump had been stopped. Neither the kelly bar nor well measuring hoist is required during the operation, and it is unnecessary to adjust mud cycle prior to well measuring. Pump can be started, the drilling tool can be lifted up and down or turned, and the normal drilling operation can be launched at any time during the course of well measuring, thus the well measuring course is simplified, well measuring time is shorted, and the accident hazard can be prevented efficiently, well measuring speed can be more quickly.