Server network packet loss can be caused by a variety of reasons, and the solution depends on the specific cause of the problem. Here are some possible solutions that can be tried step by step depending on the nature of the problem:

　　Check the physical connection: Make sure the physical network connection of the server is normal. Check network cables, switches/routers and other hardware devices to make sure they are not faulty.

　　Monitor network traffic: Use network monitoring tools (such as Wireshark) to monitor the server's network traffic. This helps identify if there is unusual packet loss.

　　Server load and performance: Server overload may cause network packet loss. Use system monitoring tools (such as top, htop) to check the load of the server. If the server load is too high, consider optimizing or upgrading hardware resources.

　　Update Driver: Update the network adapter driver on the server. Sometimes, old or incompatible drivers can cause network problems.

　　Adjust MTU: Try adjusting the maximum transmission unit (MTU) of servers and network devices. Mismatched MTU settings can lead to packet fragmentation and packet loss.

　　Firewalls and security software: Firewalls and security software may block certain network traffic, causing packet loss. Make sure the configuration is correct and check for false positives.

　　Routing configuration: Check the server's routing configuration to make sure they are correct. Incorrect routing can cause packets to be dropped or forwarded incorrectly.

　　DNS problem: DNS resolution problem may cause the domain name to be unable to be resolved, resulting in network packet loss. Make sure DNS is configured correctly.

　　Provider issues: If you are using a server from a cloud service provider, network packet loss issues may be caused by issues with their network. Contact your provider's support team for assistance.

　　Monitoring tools: Use professional network monitoring tools to diagnose network problems. These tools can provide detailed network traffic and performance information to help you find the root cause of the problem.

　　Consult an expert: If the problem persists and cannot be resolved, consider consulting a network expert or system administrator. They can perform more in-depth troubleshooting and diagnosis.

　　Please note that when solving network packet loss problems, you need to be careful to avoid introducing other problems. It's best to back up critical data and configuration first, then test and apply the solution step by step. Depending on the complexity of the issue, it may take some time to diagnose and resolve the issue.