Based on A Multi-Phase Transport model, the elliptic flow $v_{2}$ of $phi$ mesons which is reconstructed from $K^{+}K^{-}$ at the Relativistic Heavy Ion Collider (RHIC) energy has been studied. The results show that reconstructed $v_{2}$ of $phi$ meson can keep the earlier information before $phi$ decays and it seems to obey the number of constituent quark scaling as other mesons and baryons. This result indicates that the $phi$ $v_2$ mostly reflects the parton level collectivity developed during the early stage of the collisions and the strange and light up/down quarks have similar collectivity properties before the hadronization.
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