The aim of this study was to investigate the effects of using magnetic water on Zaraibi goat's milk yield and its composition. Thirty Zaraibi goats in the last third of pregnancy average live body weight of 32.33 kg and aged 3-4 years old were assigned into three groups (each of ten animals).The animals were divided into three groups as follow: first group was drinking tap water (control).Second group was drinking magnetic water (T1, 2000 gauss).Third group was drinking magnetic water (T2, 4000 gauss). Milk yield was recorded monthly during 6 months of lactation season and milk samples were analyzed every month; for milk components milk fat, protein, lactose, and solids not fat using Milko-Scan 133B. Results showed that there were significant differences between groups in daily and total goats milk yield. Second treatment (T2, 4000 gauss) had a higher daily and total milk yield than the first treatment (T1, 2000 gauss) and the control group. Similar findings were recorded for goat's milk composition (fat, protein, total solids and solids not fat %) while, there had no significant differences on lactose percentage due to using magnetic water. Second treatment (T2, 4000 gauss) had a higher milk composition than the first treatment (T1, 2000 gauss) and the control group except lactose %. It can be concluded that drinking magnetic water (T1, 2000 gauss and T2, 4000 gauss) can be increases effectively the daily, total Zaraibi goat's milk yield and its composition except lactose percentage without negative effects.