The invention discloses an oil production method and a well network arrangement structure thereof. The oil production method comprises the steps that an injection pipe column is put into an injection well in the preset well network structure after well completion of a target oil reservoir, and production pipe columns are put into production wells; air in a first time period is injected into an oil sleeve annulus of the injection well at a first injection speed to enable crude oil in the target oil reservoir and the air to be subjected to an oxidation reaction; after a second time period, water of a preset temperature in a third time period is injected into upper branched horizontal wells of the injection well at a second injection speed; after a fourth time period, oil production is conducted in the production wells; and water of a preset temperature is injected into upper branched horizontal wells of the injection pipe column by a preset cycle, and air is injected into the oil sleeve annulus of the injection well for continuous production. By adoption of the oil production method and the well network arrangement structure thereof, deep common thick oil can be economically and effectively produced.