The invention discloses a magnetic resonance imaging method. The magnetic resonance imaging method comprises the steps of monitoring the respiratory movement of a subject through a respiratory navigation sequence, monitoring the cardiac motion of the subject through an electrocardio navigation sequence, and judging whether the physiological state meets the preset scanning condition or not, wherein the scanning condition is that the respiratory movement enters the expiratory end period and the cardiac motion enters the diastole; if the physiological state meets the scanning condition, motivating an imaging sequence in a to-be-imaged region, and acquiring the magnetic resonance imaging data; if the physiological state does not meet the scanning condition, continuing to monitor the physiological state of the subject till the physiological state meets the scanning condition; and after the imaging data is acquired, carrying out reestablishment to obtain a magnetic resonance image. According to the magnetic resonance imaging method, the physiological state of a human body is monitored through the respiratory navigation sequence and the electrocardio navigation sequence alternately, a magnetic resonance signal is acquired at a common interval of the expiratory end period and the diastole, and respiratory movement and cardiac motion artifacts can be effectively avoided. Besides, the invention further provides a magnetic resonance imaging system.