The general SSR address is like this: ssr://[Base64] We can use Base64 Converter to convert Base64 Encoded to Base64 Decoded.

Next I'll use an invalid SSR address as an example:
ssr://MTQyLjIyNC4yMzMuMTM3OjEwNjUxOmF1dGhfc2hhMV92NDphZXMtMjU2LWNmYjpodHRwX3NpbXBsZTpURzkwZFhOT1lXMWxjekF3T0RrPS8/cmVtYXJrcz1hSFIwY0hNNkx5OXpjTlZHaZNRdV

When converting SSR, we first ignore the ssr:// in the header, then we are left with: MTQyLjIyNC4yMzMuMTM3OjEwNjUxOmF1dGhfc2hhMV92NDphZXMtMjU2LWNmYjpodHRwX3NpbXBsZTpURzkwZFhOT1lXMWxjekF3T0RrPS8/cmVtYXJrcz1hSFIwY0hNNkx5OXpjM0l1WldMVdlZHaGxUp

Then we use Base64 Converter to convert the Decode obtained in the previous step.

After Decode, the result is as follows:
142.224.233.137:10651:auth_sha1_v4:aes-256-cfb:http_simple:TG90dXNOYW1lczAwODk=/?remarks=aHR0cHM6Ly9zc3IuZWUvVGhlLUJlc3QtU1NS3

After careful analysis, the visible format is as follows:
IP address: Port: Protocol: Encryption method: Obfuscation: [Password after Base64 Encode]:=/?remarks=[Extra parameters after Base64 Encode]

Then the complete SSR address is like this, don't forget to add ssr:// at the beginning