Abstract: The mining stability of steeply inclined parallel ore bodies in metal mines is an important factor restricting the safe production underground in mines. By taking the parallel ore body of a copper-cobalt mine in Africa as the research background, the hydrology of the mining area, stability of ore rock and characteristics of the ore body were analyzed, a three-dimensional numerical model of the steeply inclined parallel ore bodies was built, and single ore body mining, double ore body mining and the mining sequence of the underground parallel ore bodies were researched via numerical simulation. Meanwhile, the distribution characteristics of stress, displacement, and plastic zones were analyzed, and the stope stability under single ore body mining, double ore body mining and different mining sequences under the action of dynamic disturbance was investigated. The results show that after the numerical model reaches the stress equilibrium state, there is no obvious variation in the stope stability under different mining sequences of the hanging wall and footwall, and compared with the double ore body mining, the single ore body mining has better stability. The stress and displacement of the goaf are roughly rotationally symmetrical along the center line of the roof and floor, and the center of the weakly mineralized zone, with the maximum displacement of about 16 mm. Additionally, the plastic zones are distributed on the goaf surface, extending up to 10 m. The weakly mineralized zone between the double ore body is prone to shear failure, and attention should be paid to the stability of the weakly mineralized zone during mining.