A participatory approach of co-designing prospective scenarios was used to define futures of the crop-livestock integration practices and of livestock systems development at farms and territorial levels in Dien Bien District. Based on the previous results (landscape characteristics, agrarian diagnosis, farm typology and farm trajectory), a diversity of local stakeholders (farmers, extension agents, local authorities) identify the factors of change in crop-livestock integration practices, and livestock systems development specifying the internal factors (on which they can act) and the external ones (on which they cannot act). The attendees reflect on the range of possible future changes in crop-livestock integration and livestock systems at farm and district levels (current evolutionary trends, possible alternatives). Finally, they describe the prospective scenarios. Based on the results of the prospective workshop, 5 scenarios have been designed. In the first scenario A - The current situation continues. The district still has a mix of farms, specialized livestock farms and crop farms. The number of farms continues to decline in favor of specialized farms. Slope crops are still grown with soil degradation. Fodder has continued to develop on roadsides and in gardens. A few more industrial farms established in the district are dependent on feed processing companies, without links with other farms for animal feed and soil fertility management. Farmers use more chemical inputs and concentrates. Fodder resources are insufficient to support the development of livestock production. With the scenario B "Feed self-sufficiency, farmers implemented new areas of fodder crops. Slope land crops (maize and cassava) are partially replaced by fodder and forest following reforestation objectives. The farmers and local authorities would be as self-sufficient as possible in animal feeding (on-farm production, applying technical innovations, crop residues treatment, feed formulas). An i