From the current situation and the duty of synthetic research on cosmos-earth -life (CEL) and the need for building geospherology this paper gives a deeper discussion on the concept of the earth s surfaces with regard of the entirety of lithosphere and atornosphere and the diffusibility and permeability of hydrosphere and biosphere. Because of limitation of it s concept commonly used nowadays the earth s surfaces needs a new definition to it s connotation and boundary. A new boundary of the earth s surfaces includes iithosphere，hydrosphere，atamasphere，biosphere and physic fields on surface as a whole.