Abstract: In virtual landscape, the realistic simulation of flower motion has an important effect on the plant interaction. Due to the complex topology structure of plant stem and petals, plant dynamic simulation is becoming a challenge topic in the recent virtual landscape research. In this paper, a method of flower dynamic simulation was presented based on inverse kinematics. The movement of flower can be regarded as a bending rod in mechanical space. A flower rod model is provided by labeling skeletal nodes in flower stems and analyzing the force. In order to make the result more reality, the elastic force in the skeletal nodes is taken into consideration to realize the smooth motion effect. Different types of wind can be set in the simulation system with different force and speed. At last, the algorithm validity and efficiency were tested by using different flower models.