Anyone knows how to set arguments of golang in run configurations？

Please see params section at the bottom in the Run Configuration reference.

sorry，what i mean is pass the command line arguments to golang program.

There was an issue which will be fixed with the next Fleet update so there will be an ability to pass arguments to a Go program using runParams. E.g.

      {
        "name": "go run with args",
        "type": "go",
        "goExecPath": "/usr/local/go/bin/go",
        "buildParams": ["go-awesome-project"],
        "runParams": ["a", "b", "c"],
      },