Can i bring in my check-in luggage in guangzhou metro?

Well, if your luggage is in regular size, you can surely board the metro with it. Anyway, here is the regulation for your reference: it is ok to take luggage within 20kg on the train and the length should be within 130cm. If between 20-30kg and the length 130-160cm, you need to pay CNY2 for your luggage. If larger, it is not allowed to take in.