A total of 10 stable Egyptian buffalo bulls with an average of 435.9±2.29 kg of live body weight and 18-24 months of age were used to research the effects of magnetic drinking on testicular proportions, physical semen characteristics and buffalo bull fertility. The bulls of Buffalo were classified into two related categories (5 bulls in each). Bulls in the first group were drinking natural water (NW) and acted as a monitoring group (G1). Bulls in the 2nd category had been drinking magnetic water (MW) for 60 days of pre-semen collection. During the semen collection era, ejaculate length, sperm cell concentration, sperm kinematics using a computer-assisted sperm analyzer and testicular measurements were registered. A total of 160 buffalo cows were used in a fertile survey (80 buffalo cows in each group). The findings revealed that testicular length, distance, and height, and scrotal diameter were substantially higher in MW than in NW bulls. Serum testosterone concentration was higher (P<0.05) in MW than in NW bulls (0.833 vs. 0.716 ng/ml). Most physical semen properties were higher (P<0.001) in MW than in NW bulls. The gaps in the ratios of non-progressive motility, straightness and chaos between the two classes were not important. The design rate on days 25 and 45 of post-insemination was higher (P<0.01) for buffalo co inseminate with MW semen (95.06 vs. 91.36) than for NW bulls (86.08 and 78.48 per cent respectively.