The invention discloses a highly-deviated well intelligent layered oil recovery string. The string comprises a layered production string body, the layered production string body comprises a porous pipe and a round plug, and a passing cable positioning seal, a plurality of layered production allocation devices and at least one passing cable insertion seal are arranged between the porous pipe and the round plug; each layered production allocation device is connected with a ground controller through a steel armored cable, the ground controller is connected with an upper computer, each layered production allocation device corresponds to one oil layer, and sealing between different layers is achieved through the passing cable positioning seal and the passing cable insertion seals. A work method of the string includes the steps that pigging is conducted; joint debugging testing of the layered production allocation devices is normal, and the string and the steel armored cables are put into a well; examining seal is conducted on the string; a pump is started for production; fixed-point acidification is conducted. By means of the string, online stepless regulation of highly-deviated well layered oil recovery can be achieved, and fixed-point acidification can be conducted according to production requirements.