In this work, we construct the color-singlet-color-singlet type six-quark pseudoscalar current to investigate the ${\bar{\Xi }}_{cc}{\Xi }_{cc}$ hexaquark molecular state with the QCD sum rules, the predicted mass $M_X\sim 7.2\text{GeV}$ supports assigning the $X\left(7200\right)$ to be the ${\bar{\Xi }}_{cc}{\Xi }_{cc}$ hexaquark molecular state with the quantum numbers $J^{PC}=0^{-+}$. The $X\left(7200\right)$ can decay through fusions of the $\overline{c}c$ and $\overline{q}q$ pairs, we can search for the $X\left(7200\right)$ and explore its properties in the $J/\psi J/\psi$, ${\chi }_{c1}{\chi }_{c1}$, $D^{⁎}{\overline{D}}^{⁎}$ and $D_1{\overline{D}}_1$ invariant mass spectrum in the future.