Abstract: Even though it is known in every rural community in developing countries there are common herbal plants used for managing various health problems occurring in the community, limited studies if any have been done to establish the vernacular and scientific names and for which specific health condition being managed by these common herbal plants. The present study aimed to explore the vernacular and scientific names and for which specific health conditions common herbal plants are used to manage by non structured interview to selected key informants at Mlangali ward, Ludewa district, Njombe region, Tanzania. The herbal plant specimens and ethno-medical uses were collected from the field work and compared with same herbal plants found in literature review. Thirty common herbal plants with their uses were identified. Of these 13 (43.3%) common herbal plants were reported by 18 (60%) respondents and these were assumed to be the common herbal plants at the ward. The vernacular names from the community and later scientific names were identified by the botanist at the Institute of Traditional Medicine. Nowhere was observed these common herbal plants uses were documented at the ward. All the identified herbal plants were used to manage ill health conditions that were occurring at the ward. The study noted that there was threat of those common herbal plants with the increasing population and there was no effort of establishing sustainable conservation. Comparing with those found in literature review, the findings revealed some herbal plants were used worldwide in developing countries for treating the same ill health conditions. Some had different uses. As a whole most herbal plants had multiple uses on managing ill health conditions. Effort is needed to document and conserve sustainable the common herbal plants for future use and scientific investigation for new drug development.