Hi, I reach Baiyun Airport at 1.30 am, I need to go to go to Lido Hotel, how to do this.

Well, I suggest you take shuttle bus line 1, which will not stop operating until the arrival of the last flight, to its terminus - CAAC Ticket Office, near to GZ Railway Station, which is around 4km from your hotel. Upon your arrival there, you can take a taxi to reach exactly then.