How should I do if I want to run a full node in GUI? I'd like to run a full node within bitcoin-qt.exe(It's GUI)

I would like to run it as full node like typing command : "bitcoind -daemon"

Is it enough to run by just execute a GUI wallet(bitcoin-qt.exe)?

Thank you.
Yes. Bitcoin Core is always a full node software and does not have any SPV components within it. Running any part of Bitcoin Core (bitcoind or bitcoin-qt) means that you are running a full node.