He said the TAT's war room has closely monitor the protests and the impacts. TAT has also worked closely with overseas offices and hotel associations.
He said that TAT officers have mingled with protesters at protest sites.
According to TAT, 16 countries have issued warning against travelling to Thailand, according to the Tourism Authority of Thailand.
They included the UK, France, Sweden, Japan, Taiwan, Canada, Australia, Brazil, Singapore, Norway and Germany.
Thailand's tourism high season starts in October.