She said anti-government protestors' demands were not possible under the constitution, but that she remained open to talks.
"Anything I can do to make people happy, I am willing to do... but as prime minister, what I can do must be under the constitution," Ms Yingluck said.
On Thursday she survived a no-confidence vote in parliament.
Protests began in Bangkok last week and demonstrators accuse the prime minister of being an illegitimate proxy for her billionaire brother, Thaksin, who was ousted in a 2006 military coup.
On Monday protesters tried to storm Government House.
Image: © Getty
Copyright is owned by Asia Outlook and/or Outlook Publishing. All rights reserved.