Abstract: TiO₂/C-ATP composites consisting of palmerworm-like TiO₂ nanorods in-situ growth on the surface of conductive attapulgite (C-ATP) were constructed via a hydrothermal approach. Then TiO₂/C-ATP was used as the carrier to uniformly load carbon nitride quantum dots (CNQD) to successfully prepare hierarchical CNQD-TiO₂/C-ATP heterojunction photocatalysts. The obtained samples were characterized by XRD, FTIR, SEM/TEM, ultraviolet-visible (UV-Vis-DRS), photoluminescence (PL), Brunauer-emmett-teller (BET) specific area analyzer and photoelectrochemistry. The degradation ability of the sample to tetracycline hydrochloride (TC) was investigated under visible light. The results show that CNQD-TiO₂/C-ATP composites dramatically enhance the visible light response, the absorption capacity and the separation of photogenerated electron-hole pairs compared to TiO₂/C-ATP and CNQD. After 120 min irradiation, the degradation rate of CNQD-TiO₂/C-ATP to remove TC can achieve 88%.