Suu Kyi has been under house arrest since February 2021 when a military coup ousted her elected government.
The 76-year-old Nobel laureate has been charged with a raft of criminal offences including voter fraud.
She denies all of the accusations and rights groups have condemned the court trials as a sham.
The closed-door hearings in the capital Nay Pyi Taw have been shut to the public and media, and Suu Kyi's lawyers forbidden from speaking to journalists.
