Research results show that chevron-shaped tube has adva-ntages of better hydraulic condition needed for sedimentation and adapta-bility for treatment of raw water turbidity.This paper points out the wayto select the construction parameters of chevron-shaped tube.The contrastresearch between chevron-shaped tube and honeycomb-shaped tube has beendone.The formula of hydraulic characteristic parameter of chevron-shapedtube is given.This formula sets out a theoretic base for practical applicationof chevron-shaped tube.