Using two fresh upper limbs of adult, the ABS casts of the fine vasculature about the skin, superficial and deep fascia of thenar and hypothenar were studied by scanning electron microscopy. The microvessel networks contained five layers, that is, (1) the papillary: the capillary loops aligned with the skin-print; (2) the subpapillary; (3) the profund corium: capillaries of the glomus bodies were visible; (4) the superficial fascia: the meshwork being leaf-like; (5) the profund fascia: mainly the line vessels. There is no difference about the morphologic construction of the microvessel networks between the left and the right hand, and between thenar and hypothenar.