[Objective] The paper was to study the occurrence and damage regularity of tobacco cutworm moth (Spodoptera Litura Fabricius) in low-altitude area in Lincang city. [Method] The adult sex attractant monitoring, field investigation of occurrence and damage, and observation of continuous generation development of natural populations were carried out in natural flue-cured tobacco fields. [Result] In field growth period of flue-cured tobacco under low-altitude of 1 000-1 300 m, tobacco cutworm moth occurred for 4 generations, the duration of each generation was about 33 d, and the main injurious generation was the third generation. [Conclusion] The paper provided reference for comprehensive control of tobacco cutworm moth in the low altitude areas. [Objective] The paper was to study the occurrence and damage regularity of tobacco cutworm moth (Spodoptera Litura Fabricius) in low-altitude area in Lincang city. [Method] The adult sex attractant monitoring, field investigation of occurrence and damage, and observation of continuous generation development of natural populations were carried out in natural flue-cured tobacco fields. [Result] In field growth period of flue-cured tobacco under low-altitude of 1 000-1 300 m, tobacco cutworm moth occurred for 4 generations, the duration of each generation was about 33 d, and the main injurious generation was the third generation. [Conclusion] The paper provided reference for comprehensive control of tobacco cutworm moth in the low altitude areas.