The invention provides a steam-carbon dioxide assisted gravity oil drainage oil production method, which comprises the following steps of: 1, preheating two horizontal wells in parallel distribution; 2, injecting steam into the upper part horizontal well, and maintaining the original formation pressure in the lower part horizontal well for production; 3, simultaneously injecting the steam and carbon dioxide into an oil layer through the upper part horizontal well, and maintaining the original formation pressure in the lower part horizontal well for production; and 4, stopping the carbon dioxide injection, continuously injecting the steam into the upper part horizontal well, and continuously performing production in the lower part horizontal well. The steam-carbon dioxide assisted gravity oil drainage oil production method has the advantage that through a steam assisted gravity oil discharge technology for reducing the crude oil viscosity, reducing the shaft heat loss and improving the steam enthalpy through adding the carbon dioxide, the recovery ratio of a super-heavy oil reservoir can be improved.