He did nothing, thinking the economic crisis would mend itself with time.
Hoover was a laissez-faire Republican who believed the government should not interfere with the economy.
Hoover's approach to the Great Depression was to do nothing initially. He believed it was a normal part of the boom-bust economic cycle. As the Depression moved on, Hoover used a method of volunteerism. Volunteerism asked those with money to give to others and to invest their money back into the banks and job creation.