Abstract Spatial profiles of plasma flow and Mach number in the stochastic magnetic boundary layer as well as ion temperature ( T i ) and electron temperature ( T e ) in the divertor region in Large Helical Device (LHD) have been studied by a movable multiple functions probe, which consists of Mach probes and an ion sensitive probe. The results of ion saturation current measurements indicated plasma flow direction is alternated in the stochastic magnetic boundary. Mach number profiles for different plasma densities have been evaluated experimentally which compared with 3-D transport code. T i and T e in the divertor region measured by the ion sensitive probe decreased with increasing line-averaged density. Although T i was higher than T e in the low density plasma, both temperatures became almost the same at higher density.