Background: DM is a complicated condition that impacts the handling of sugar, fat, and protein metabolism in our bodies. Medicinal herbs play a significant role in diabetes care. As a result, we focused on the plant components traditionally employed by regional medical professionals. Objectives: The current research was carried out to check if Sorbaria tomentosa (Lindley) Reh. (ST) the ethanolic root extracts anti-diabetic potential. ST is a member of the Rosaceae family commonly known by the common name "false spirae." The root extract of ST is used by the locals in the Kinnaur district of Himachal Pradesh to effectively treat diabetes. Materials and Methods: Plant ethanolic extracts were evaluated for their potential on alloxan-induced diabetic rats for 14 days. The animals were put into one of four treatment groups at random: a normal control group, not treated diabetic control group (150 mg/kg bw), a drug control group that got glibenclamide (5 mg/kg bw), and the last treatment group medicated with ST root extract (50 mg/kg BW). Liver, pancreas, and kidney histopathology were analyzed to correlate biochemical findings with histological changes. Results: Our results showed that the extract and medication-treated diabetic groups gained statistically significant weight (p≤0.001) and that their BGL went back to normal. Along with more common biological markers such as SGOT, SGPT, ALP, TC, TG, HDL, LDL, VLDL, creatinine level, uric acid, urea, and uric acid were measured. After the extract treated hyperglycaemic rats, all biochemical markers came under the normal range (p≤0.001). Improvement of the damaged structure of the liver, pancreas, and kidneys was observed after treatment with standard medication and root extracts of ST. Conclusion: Based on the data gathered from the tribal research area, to the best of our capacity, we have uncovered for the very first time the anti-diabetic efficacy of the plant parts. The empirical knowledge of previous generations is typically the basis for the traditional utilization of medicinal plants for controlling diabetes. Nevertheless, in vivo, research has assisted to discover the anti-diabetic potential of ST's ethanolic root extract and provides scientific proof to back up these claims. The plant component may also be used to create natural antidiabetic drugs that are effective.