Abstract: Using in situ adsorption method, the bacterial cellulose (BC) was soaked to curcumin in ethanol solutionin. Curcumin was adsorbed into BC to obtained BC/curcumin composite materials with different concentrations. SEM, FTIR, XRD and contact angle measurement instrument were used to test the characterization and performance of BC/curcumin composites. The results show that the curcumin could be introduced into BC materials by in situ adsorption method. As the concentration of curcumin increases, the amount of curcumin in the BC increases. The BC/curcumin composite samples in damp environment could prevent mildew. The BC/curcumin composites have good application prospect in packaging materials or tissue engineering materials.