Summary: We consider the regularity criteria for weak solutions to the 3D MHD equations. It is proved that under the condition \(b\) being in the Serrin’s regularity class, if the pressure \(p\) belongs to \(L^{\alpha,\gamma}\) with \(\frac{2}{\alpha}+\frac{3}{\gamma} \leqslant 2\) or the gradient field of pressure \(\nabla p\) belongs to \(L^{\alpha,\gamma}\) with \(\frac{2}{\alpha}+\frac{3}{\gamma} \leqslant 3\) on \([0,T]\), then the solution remains smooth on \([0,T]\).