The study aims to determine the effect of A. microphylla in Arabic layer rations on meat calcium mass and meat protein mass. The benefits of research can provide information on the utilization of A. microphylla as a Arabic layer. This research used completely randomized design (CRD) with 4 treatments and 5 replications. The treatment given is the gift of A. microphylla different levels (0%, 3%, 6% and 9%). Parameters measured were meat calcium mass, meat protein mass, and hen day production. The materials used are 80 Arabic layers (age ± 9 months) with average weight at 1125±124,52g. The making of ration is based on iso protein and iso energy principle. Meat calcium mass and meat protein mass was measured from meat sample which is taken twice at 4 and 8 weeks after the treatment has been implemented. The results showed that combining the A. microphylla into the ration up to level 6% after 8 weeks of treatment could improve protein deposition ability which stated at meat protein mass.