The invention relates to an intelligent flow meter adopting a TMR (Tele Meter Reading) magnetic sensor, comprising a TMR flow meter sensor, a flow meter shell, a rotational impeller, a rotational impeller stand, a small magnet with an upward N pole, a small magnet with an upward S pole, a flow meter inlet / outlet, a magnetic shielding layer and a protection layer isolated a flow meter chip from fluid. When fluid to be measured exists, the measured fluid drives the rotational impeller to rotate so as to drive the small magnet with the upward N pole and the small magnet with the upward S pole to rotate simultaneously, and the TMR magnetic sensor induces a magnetic field so as to achieve the purpose of metering. The invention has the advantages of tiny power consumption, wide working frequency range and working temperature range, firm structure, small size, long service life, convenient installation, shock resistance, clear output wave shape without vibration, high position repeating accuracy, simple electromagnetic shielding structure, reverse rotation error prevention calculation, and the like.