  In this letter, we take the point of view that the X(1576) be tetraquark
state which consists of a scalar-diquark and an anti-scalar-diquark in relative
$P$-wave, and calculate its mass in the framework of the QCD sum rules
approach. The numerical value of the mass $m_X=(1.66\pm 0.14) GeV$ is
consistent with the experimental data, there may be some tetraquark component
in the vector meson X(1576).
