Studies of $XYZ$ states at BESIII

With about 12 fb${}^{-1}$ of collected data useful for the study of $XYZ$ states, BESIII collaboration continues the exploration of these exotic charmoniumlike states. Recent results of the measurements of the line-shape of $e^{+}{e}^{-}\to {\pi }^0{\pi }^0\psi (3686)$, $KKJ\mathrm{/}\psi$, and ${\pi }^{+}{D}^0{D}^{\ast -}$, as well as the $J^P$ determination of $Z_c(3900)$ and $Z_c(3900)$ observed in $e^{+}{e}^{-}\to \varphi {\chi }_{c1,2}$ at $\sqrt{s}=4.6$~GeV will be presented.