At international level, he features for Cambodia U22. His main role on the pitch is Forward. His estimated market valuation currently stands at 10K €.

His latest transfer saw him join Tiffy Army FC from Life FC via Loan on 2024-06-30.

During the AFF ASEAN Hassanal Bolkiah Trophy 2022 campaign, Piseth Mao made 1 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 0 shots, with 0 on target.