The invention discloses a tension dispersed anchor cable for a coal mine and an anchoring method thereof, which consists of an anchor head section, a free section, and an anchoring section. The invention is characterized in that anchoring agents with different hardening times are adopted on different anchoring segments of the anchoring section along the depth direction of the drilled hole of the anchoring section; therefore, the anchoring agents injected on different anchoring segments at the same time are completely hardened at different time; moreover, the anchoring agents on the inner anchoring segments closer to the bottom part of the drilled hole are hardened firstly; and the anchoring agents on the outer anchoring segments neighboring with the inner anchoring segments closer to the mouth of the drilled hole are completely hardened in 10-20 hours lately. The invention can effectively improve the stability and safety of roadway supports.