A climbing safety ladder comprises a ladder body, and a supporting belt is arranged in the middle of the top end of the ladder body. The ladder further comprises a supporting rod, one end of the supporting rod is rotatably connected with the ladder body, and a plurality of fixing holes are formed in the supporting rod. The anti-falling ladder is stable and reliable in connection, can be preventedfrom falling laterally, meets the requirements of pole climbing operation on uneven ground, particularly on different terrains such as an upper ridge and a lower ridge, and is suitable for various occasions.