The present invention has an object to provide a production method of
acrolein capable of producing acrolein with suppressing the yield change
with time. The production method of the invention is that glycerin is
dehydrated under coexistence with a catalyst having crystalline
metallosilicates containing at least one kind of T atoms and 15% by mass
or less of a binder, and the Si atoms to T atoms ratio (Si/T) of the
catalyst is 800 or less.