1. Processing capacity: According to the scale of the pig farm and the amount of manure produced, the organic fertilizer production line with corresponding processing capacity is selected to ensure that the equipment can meet the daily manure treatment needs of the farm.

2. Technology maturity: Selecting organic fertilizer equipment with mature technology and stable performance can reduce the failure rate of equipment and improve processing efficiency.

3. Environmental performance: The equipment should have good environmental performance and can effectively reduce the pollution of feces to the environment, such as reducing odor and controlling the spread of pathogens and parasites.

4. Economy: Consider the investment cost, operating cost and maintenance cost of equipment, choose cost-effective equipment. At the same time, consider the economic benefits after the operation of the equipment, such as the sales income of organic fertilizer, the cost of saving fertilizer, etc.

5. Convenience of operation: Select equipment that is easy to operate and easy to maintain, reduce manual operation intensity, and improve work efficiency.

6. Resource utilization: Select equipment that can realize the resource utilization of manure, such as the production of organic fertilizer, biogas, etc., to increase the additional income of pig farms.

7. After-sales service: Consider the after-sales service and technical support of the equipment to ensure that the problem of the equipment can be solved in a timely manner.

Through comprehensive consideration of the above factors, pig farms can choose the appropriate pig manure organic fertilizer equipment to achieve the effective treatment and resource utilization of manure, while meeting the requirements of environmental protection and improving economic benefits.