The flow characteristics of the sphere under uniform flow in a large space have been extensively studied

but the influence of the wall on the flow characteristics of the sphere is not clear. The wake of the particle is focused. Results show that there are three regimes of the sphere wake

which are steady wake

unsteady symmetric wake and unsteady asymmetric wake. If Re<150

steady wake occurs

and the wake is symmetric with respect to a plane perpendicular to the wall. If 150<Re<400

the wake is still planar symmetric. When the Reynolds number is large

regular and periodic vortex shedding occurs behind the sphere

and the Strouhal number is about 0.26－0.33. The vortex is planar symmetric with respect to a vertical plane passing through the sphere center and the vortex. The frequency band of the power spectra of the sphere wake is wide. If Re>400

the vortex shedding is not symmetric and becomes chaotic as Reynolds number increases.