Prostate cancer is forth most common diagnosed tumors in Malaysian male. The use of a self-reported, quality of life assessment is important for clinical practice, care taker and researcher to evaluate the level of quality of life. The aim of this study was to measure the internal consistency of the translated Malay Language EORTC QLQ-C30 and EORTC PR-25 questionnaires among prostate cancer patient at National University of Malaysia hospital in Kuala Lumpur, Malaysia.