In this article , we present a detailed chemical analysis of seven red giant members of NGC 6553 using high-resolution spectroscopy from VLT FLAMES . We obtained the stellar parameters ( T _ { eff } , Log ( g ) , v _ { t } , [ Fe/H ] ) of these stars from the spectra , and we measured the chemical abundance for 20 elements , including light elements , iron-peak elements , \alpha -elements and neutron-capture elements . The metallicities in our sample stars are consistent with a homogeneous distribution . We found a mean of [ Fe/H ] =-0.14 \pm 0.07 dex , in agreement with other studies . Using the alpha-elements Mg , Si , Ca and Ti we obtain the mean of [ \alpha /Fe ] = 0.11 \pm 0.05 . We found a vertical relation between Na and O , characterized by a significant spread in Na and an almost non-existent spread in O . In fact , Na and Al are the only two light elements with a large intrinsic spread , which demonstrates the presence of Multiple Populations ( MPs ) . An intrinsic spread in Mg is not detected in this study . The \alpha , iron-peak and neutron capture elements show good agreement with the trend of the bulge field stars , indicating similar origin and evolution , in concordance with our previous studies for two other bulge GCs ( NGC 6440 and NGC 6528 ) .