1, legal status: Gangu Prison is a prison in northwest China, while Tianshui Prison is a penal enforcement agency in northwest China.
2. Jurisdiction: Gangu Prison mainly has jurisdiction over criminals in Gansu Province, while Tianshui Prison mainly has jurisdiction over criminals in Shaanxi Province.
3. Supervision: Gangu Prison implements a supervision method based on community correction, while Tianshui Prison implements a supervision method based on imprisonment sentence.