Abstract: Gardeners爷cutting irrigation posture is the main cause of their occupational diseases and hazards. Falling indexes of the operators conducting cutting irrigation were tested by the balance testing system of Tetrax. The experimental data indicated that body balance of the operators conducting cutting irrigation can be influenced. Falling indexes of pruning work during mowing operations and visual impairment were middle-level, which may lead to falling accidents. Cutting irrigation posture was analyzed by the surface electromyography technology. It is concluded that uneven force of trunk muscle and overwork of erector spinae are the main features of gardeners'trunk muscle activities, as well as the main cause of gardeners'back injuries.