The objective is to compare the different shrub architecture and uncover mechanism of controlled moving sand,also to provide the basic data for simulation research of simulated fixed-sand shrub.The crotch angles,branch length,branch number and architecture of Haloxylon ammodendron,Artemisia ordosica,A.arenaria,Hedisarum scoparium,Calligonum mongolicum,Nitraria tangutorum,Reaumuria kaschgarica were measured and analyzed at the lower reaches of Shiyang River Basin.The results showed that:(1)the mean of crotch angle measured seven shrubs increased gradually from inside to outer position of canopy with four branching ranks.It was only A.ordosica that the length of outer twigs was longer than that of inside twigs of canopy.(2)The number of branching fractal dimension of R.kaschgarica was bigger than that of the other 6 shrubs.Second one of branching fractal dimension was H.ammodendron and N.tangutorum,the least one was C.mongolicum and H.scoparium.The branch-stem ratio was less than one except H.ammodendron.(3)Except C.mongolicum,the number of upwind projected area increased with height of canopy,and gradually decreased at the maximizing point of upwind projected area.R.kaschgarica,N.tangutorum,A.ordosica and H.scoparium were as dense branch shrubs,as sparse branch shrubs of H.ammodendron,C.mongolicum and A.arenaria.