An embodiment of the invention discloses a magnetic resonance scanning method, a magnetic resonance scanning system and a computer readable storage medium. The method includes: acquiring a lying posture of a scan object; determining a radio-frequency energy absorption rate distribution model according to the lying posture, to-be-scanned radio-frequency sequence parameters and a pre-stored radio-frequency energy absorption rate distribution database; determining radio-frequency energy absorption rate distribution of the scan object according to the radio-frequency energy absorption rate distribution model and to-be-scanned radio-frequency sequence calibration parameters; if the radio-frequency energy absorption rate distribution meets a first distribution condition, executing magnetic resonance scanning according to a to-be-scanned radio-frequency sequence, and acquiring magnetic resonance images of the scan object. The problem of limitation in application of an existing adult magnetic resonance imaging method to pediatric patients is solved, safety monitoring in magnetic resonance scanning of the pediatric patients is realized, safety magnetic resonance scanning of patients of different ages is realized, and methods for pathological tests of the pediatric patients are extended.