Azimuthal anisotropy, especially for the multi-strange hadrons, is expected to be sensitive to the dynamical evolution in the early stage of high energy nuclear collisions. In this paper we present the latest results of multi-strange hadron elliptic flow in Au + Au collisions at[S_(NN)]^(1/2)= 200 GeV from the STAR experiment at RHIC. The number-of-quark scaling is evidenced with φ(s) and (sss) with highly statistical data, which shows strange quark collectivity at RHIC. The ν2 of φ meson is found to be consistent with that of proton within statistical error bars at p T<1 GeV/c.
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