The present invention is directed to perform T2 weighting and suppression of a signal from a specific component in short preparation pulse application time. A first 90.degree. pulse in DE pulses is a pulse which is selectively valid for water and makes the longitudinal magnetization of water turn by 90.degree. about the x axis as a rotation axis. A 180.degree. pulse is a pulse which is valid for water and fat and makes the longitudinal magnetization of water and fat turn by 180.degree. about the x axis as a rotation axis. A second 90.degree. pulse is a pulse which is valid for water and fat and makes the longitudinal magnetization of water and fat turn by 90.degree. about the x axis as a rotation axis. By the DE pulses, the longitudinal magnetization of water is rotated by 360.degree., and the effect of T2 weighting is obtained in a manner similar to the conventional DE pulses. The longitudinal magnetization of fat is rotated by 270.degree. and does not return to the original longitudinal magnetization so that the effect of suppressing a signal is obtained. Since only application time of the DE pulses is sufficient, time required to apply a preparation pulse does not increase.