Train data transmission system and method, apparatus, and medium

A train data transmission system, comprising:

• a train data acquisition device configured to acquire train-related data;
• an onboard central control device communicatively connected to the train data acquisition device;
• a network address translation (NAT) server communicatively connected to the onboard central control device;
• a data center comprising a web server and a database server, wherein the data center is bridged to the NAT server, the NAT server is configured to receive the train-related data from the onboard central control device and forward the train-related data to the database server, the database server is configured to store the train-related data, and the NAT server is configured to map a web service port of the web server to a public network;
• and
• an access terminal, wherein, in response to the web server receiving access information of the access terminal accessing a web service port exposed by the public network, the web server is configured to acquire target data from the train-related data stored in the database server according to the access information, and the access terminal is configured to receive the target data from the web server.