The local guinea fowl population of Benin is characterized by a diversity of varieties including Bonaparte reared according to different production systems. The study aims to assess the impact of guinea fowl rearing with or without outdoor access on the egg quality. Therefore, 120 fresh new laid eggs collected from 30 weeks old guinea fowl, of which 60 eggs produced under confinement rearing without outdoor access (lot1) and 60 produced under confinement rearing with outdoor access (lot2) were used for the study. The physical, technological and nutritional parameters of each egg were then evaluated by lot. It appears that the production system had significantly affected the egg shell thickness, the shell weight, the yolk diameter, the intensity of the yolk yellowness index, the yolk hue value and the yolk chromacity value, the yolk percentage, the egg shape index and the albumin percentage (P˂0.05). The technological parameters of the eggs were not affected by the production system (p> 0.05). Nutritionally, the eggs of the lot 2 were richer in protein (13.81% vs. 13.24%) and total minerals (0.96% vs. 0.92%) than those from the lot 1 (P˂0, 05). In contrast, the eggs from lot 1 had recorded the highest fat content (11.8% vs. 11.2%; P˂0.05). Significant strong positive correlations were found between the physicochemical and technological parameters of the eggs regardless of the lot (0.81≤ r ≤ 0.97; P <0.001). In conclusion, the breeding of local guinea fowl with herbaceous outdoor access improves the guinea fowl egg quality.