The construction scale of pig manure organic fertilizer production equipment is generally 30,000 to 100,000 tons per year. It is necessary to comprehensively consider local resources, market capacity, and market coverage radius. Generally, small new factories should produce 10,000 tons and 30,000 tons per year, medium-sized factories have an annual output of 50,000-100,000 tons, and large-scale factories have an annual output of 100,000-200,000 tons. The organic fertilizer production plant cost is hundreds of thousands to millions. The investment scale and product plan design need to be formulated according to the following conditions: the characteristics of raw material resources, local soil conditions, local planting structure and main crop varieties, factory site conditions, and the degree of automation of production, etc.