Abstract: An intelligent nitrogen-oxygen sensor and a detection method thereof are disclosed. The sensor includes an induction chip. The induction chip includes a substrate unit, a printing function unit and a closed structural unit. The substrate unit includes an upper zirconia substrate (1), a middle zirconia substrate (2) and a lower zirconia substrate (3). The printing function unit includes a common external electrode (11), a main pump internal electrode (12), an auxiliary pump internal electrode (13), a mixed potential sensitive electrode (31), a measurement pump internal electrode (32), a reference air electrode (33), a first insulation coating layer (41), a second insulation coating layer (42), a heating circuit (43) and eight electrode contact points. The closed structural unit includes a first measurement cavity (21), a second measurement cavity (22) and a reference air passage (23).