"I want to send a message to the people of Houston - stay strong and you have to hold onto faith.
"I know what you're going through. I went through it, my family went through it with Hurricane Andrew which was a category 5 hurricane. it was devastating but we survived and it got stronger and so will you."
The Rock wasn't the only celebrity to answer Kevin Hart's call, with Chris Brown, Nicki Minaj, DJ Khaled, and T.I. also answered Hart's plea, with Brown pledging US$100,000 and Khaled, Minaj, and T.I. each donating US$25,000.
"We ALL need to WORK on coming together [and] utilising our resources collectively to do some meaningful s- to people who need US more than ever!" T.I. wrote on Instagram.
Kim Kardashian West announced her family will donate US$500,000 to the Red Cross and Salvation Army.
On Tuesday, Jennifer Lopez and Alex Rodriguez posted a video on Instagram announcing that they have each donated US$25,000 to the American Red Cross to help with the disaster relief.
The Rock also asked the public to spare "a buck or two to help our Houston families in need".