In this study, several physical properties of causticized knitted fabrics made of bamboo/cotton blended yarns are investigated. To observe the effect of causticizing, the process has been applied to different knitted fabrics with different NaOH concentrations and different process durations. Then pilling, bursting strength and handle properties of the fabrics were evaluated. The results show that the measured physical properties of knitted fabrics changes depend on fabric structure and NaOH concentration. It was also found that the increase in NaOH concentration resulted in good pilling resistance, low bursting strength and stiff handles.