Chlorogenic acid (CGA), a key phenolic acid found in coffee, fruits, vegetables, and herbs, has significant pharmacological activities, necessitating its accurate detection in complex matrices. In this study, an organic acrylate molecularly imprinted polymers-chitosan modified zinc sulphide quantum dots/polydopamine (MIPs-CS:ZnS QDs/PDA) based composite sensor for the detection of CGA has been designed. In MIPs shell, CGA served as template and 4-vinylpyridine and methacrylic acid as functional monomers, azobisisobutyronitrile acting as the initiator and ethylene glycol dimethacrylate as the cross-linker. Chitosan was incorporated to enhance the stability of ZnS QDs, while polydopamine was introduced during polymerization to improve adhesion and the selectivity of MIPs for CGA. Under ideal conditions, the composite sensor had shown a linear range of 0.02-11 μg/mL with detection limit of 8.9 × 10