This investigation was conducted during two successive seasons 2016 and 2017 on ten years old mango (Mangifera indica L.), cv. Ewaise cultivar trees grown in Idku Center (Sand Basin No. 1) El- Behaira Governorate, Egypt. Ewaise mango trees grafted on Zebda seedlings grown at a distance of 6 x 4 m to study the effect of organic and mineral fertilization on yield and fruit quality of Ewaise mango cultivar. The experiment consisted of 8 treatments arranged in a randomized complete block design with 5 replicates for each treatments and one tree for each replicate. 1- Control 100% NPK, 2- 50% NPK+ 100% plant compost (P.C), 3- 50% NPK+ 100% animal compost (A.C.), 4- 100% (P.C.), 5- 100% (A.C), 6- 50%  P.C. + 50 % A.C., 7- 50% (NPK+ P.C. + A.C.) 8- 100% (NPK+ P.C. + A.C.). Results revealed that, 100% of (NPK+ P.C. + A.C.) followed by 50% (NPK+ P.C. + A.C.)  gave the highest mean values of number of fruit/tree and yield/tree as compared to other treatments and control, also, gave the maximum values of fruit physical characteristics: fruit weight (g/ fruit), fruit length (cm), fruit diameter (cm), fruit volume (cm³) and  pulp%. On the other hand, 100% of (NPK+ P.C. + A.C.) followed by 50% (NPK+ P.C. + A.C.)  gave the higher fruit chemical characteristics total sugar %, reducing sugar %, non- reducing sugar %, vitamin C (m g/ 100 ml juice), total acidity (%), TSS (%) and nitrogen, phosphorus and potassium % in leaves and fruits as compared with the control and other treatments, during both seasons, respectively.