Thailand is stepping up security for tourists to restore the confidence of Chinese visitors, Prime Minister Paetongtarn Shinawatra said on Friday after an alleged kidnapping of a Chinese actor sparked concerns about the safety of travellers.

The brief abduction of a Chinese actor who was trafficked into Myanmar to work in a scam camp has rattled travelers from a country that Thailand relies on for tourism.

One Chinese tourist was killed and another injured after their jet skis collided off Thailand's Phuket island on Tuesday, Chinese state broadcaster CCTV reported, citing China's embassy in Thailand.

Thai Prime Minister Paetongtarn Shinawatra said the country remains safe for tourists amid reports of a high-profile trafficking of a Chinese actor triggering mass group cancellations ahead of the Lunar New Year holidays.

Thailand sought to dampen safety concerns among potential Chinese tourists on Friday as fears mounted over reported kidnappings on the Thai-Myanmar border.