A cross-sectional study methods and systematic random sampling approach was used from November, 2020 to April, 2021 at Boko Town slaughter house of Fedis district, Eastern Ethiopia, with the objectives to assess the prevalence of rumen and reticulum foreign bodies, identify the types of foreign bodies and the associated risk factors for the occurrence of foreign bodies. From the total of 384 examined cattle, 136(35.40%) were found positive for the occurrence of indigestible foreign bodies in rumen and reticulum. Out of 136 positive cases of foreign body, 102(75%) were occurred in rumen, 31(22.80%) in reticulum. Plastics(41.20%) were the most common foreign bodies detected, followed by clothes (22.05%) and ropes(17.65%). There was statistically significant difference (p<0.05) in Prevalence among different sexes, age and body condition scores group; higher prevalence was observed in female (50%),old animals (50%) and poor body conditioned animals (55%). Therefore, sex, age and body condition score were considered as potential risk factors associated with occurrence of foreign body in rumen and reticulum. To conclude, this study shows that the grazing areas were contaminated With plastics, clothes, and other indigestible materials, could pose serious health problem for free grazing animals. Therefore, Awareness creation should be made on disposal and cleaning of indigestible materials in the grazing area.