Background: Breast diseases are usually common in reproductive age groups female. It can be benign or malignant disease. Most females complain from diseases of breast such as mastitis that are usually occur during period of lactation.

Objective: To study the epidemiological determinant of breast diseases pattern.

Methods: Cross sectional study was conducted during a period of 3 months (1st of March - 1st of Jun) at 2023 at out patients breast clinic at Al- Hilla teaching hospital in Babylon governorate.

Results: Among of (150) patients (27.33%) their age was between 40-49 years, (40%) of patients diagnosed as fibro adenoma, (28%) diagnosed as fibrocystic breast disease, (8%) diagnosed as abscess, (5.33%) diagnosed as simple cyst and (4.66%) diagnosed as ductal carcinoma.

Conclusion: Non malignant breast diseases represents a heterogeneous clusters of disorder that is common than malignant disease. In our study fibro adenoma is the most frequent one of benign breast disease, while fibrocystic breast disease consider second to fibro adenoma, that was similar to other study.