  Let $ M^n$ be a closed immersed minimal hypersurface in the unit sphere
$\mathbb{S}^{n+1}$. We establish a special isoperimetric inequality of $M^n$.
As an application, if the scalar curvature of $ M^n$ is constant, then we get a
uniform lower bound independent of $M^n$ for the isoperimetric inequality. In
addition, we obtain an inequality between Cheeger's isoperimetric constant and
the volume of the nodal set of the height function.
