This paper reports a new type of prism spectro-system, which, is comparable to the grating. The adgular dispersion amplification of VBP (Variable Beam Prisms) is applied to this spoctro-system, so that its dispersion and resolution are greater than that of normal prism spectro-system by 10-102times. When the VBP is pair-wise set into a apectrosystem, the derivation between the incident and exit beams is always fixed in operation.