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In this paper, we employ gauge/gravity duality to investigate the stringbreaking and melting of doubly-heavy tetraquark that includes two heavy quarksand two light antiquarks in a holographic model at finite temperature. Firstly,we investigate four configurations of $\rm{QQ\bar{q}\bar{q}}$ in the confinedphase and consider different separation distances of the heavy quarks atvarying temperatures. At high temperature, $\rm{QQ\bar{q}\bar{q}}$ melts atcertain distances and the confined quarks are released. As the temperaturecontinues to increase, some configurations of doubly-heavy tetraquark can notexist. Furthermore, we investigate three decay modes of $\rm{QQ\bar{q}\bar{q}}$and compare the potential energy of $\rm{QQ\bar{q}\bar{q}}$ with that of$\rm{QQq}$ at finite temperature .

Doubly-heavy tetraquark at finite temperature in a holographic model