The process of the bottle beam generated from an axicon-lens system is described by a novel method based on the ray-tracing. The intensity distribution of the bottle beam in propagation is analyzed. Using ray-tracing,the influence of the focal length of the lens on the sizes of bottle beam is analyzed. The result shows that the sizes of bottle beams increase with the increasing of the focal length of the lens. Experimentally the bottle beams are generated by using an axicon-lens system. The beam patterns are captured in different propagation position,and the evolution and transversal intensity distribution of bottle beam is analyzed. The experimental results fit well with the theoretical simulation. Therefore,we can choose right size bottle beam to manipulate different particles.