The invention provides an ore body arched vertical face mining method. A plurality of mine columns are divided in the maximum principal stress direction of a mined ore body; a plurality of ore beds are divided in the vertical direction, namely the starting ore bed, the middle ore beds and the top ore bed from bottom to top; and the ore beds are divided into a plurality of ore chambers in the direction perpendicular to the maximum principal stress direction, and the middles of the starting ore bed, the middle ore beds and the top ore bed are the first ore chamber, the second ore chambers and the third ore chamber correspondingly. After the first ore chamber is mined, mining is conducted towards the two sides of the first ore chamber, filling is conducted after the ore chambers with the predetermined number of A are mined, and meanwhile the second ore chambers and the ore chambers adjacent to the filled ore chambers are mined; after mining, mining is conducted towards the two sides of the second ore chambers, filling is conducted after the ore chambers with the predetermined number of A are mined, and then the middle ore bed located above the ore bed is mined till the top ore bed ismined; and meanwhile, the third ore chamber and the ore chambers adjacent to the filled ore chambers are mined, and after mining, mining is conducted towards the two sides of the third ore chamber till all the ore chambers are mined. The problem that in the prior art, large ground surface settlement is prone to occurring in the ore body mining process is solved.