The experiment was conducted to find out semen quantity and quality in relation to age, body weight and scrotal circumference (SC) of Black Bengal buck, the most important goat breed in Bangladesh. Semen was collected from four bucks by the method of ariificial vagina (AV). After collection semen was evaluated for volume per ejaculate (ml), mass motility (%), individual motility (%), morphology (% normal and abnormal sperm) and concentration (million/cc) in relation to age, body weight and SC. Age, body weight and SC of four different bucks were 34 to 45 months, 20.0 to 33.6 kg and 20.1 to 21.0 cm, respectively. The mean volumes per ejaculate were 0.4±0.03 to 0.5±0.22 ml and mass motility was found 76.0±1.5 to 78.0±1.1%. On the other hand individual motility in terms of progressive, oscillatory and rotatory were 65.7±0.1 to 68.0±1.3%, 5.0±0.6 to 6.1±0.4% and 4.0±0.4% to 5.4±0.3%, respectively. While the (normal and abnormal sperm) and sperm concentration were found to be 89.7±0.35 to 91.2±0.4% and 8.8±0.4 to 10.3±0.4% and 2434.0±52.8 to 2853.0±90.1 (million/ml), respectively.