Scientific presupposition is self-evident premise idea in scientific activities. Understanding of its rationality problemexperienced roughly change process that from logical empiricism to historicism to naturalistic. Scientific presupposition is domi- nant factor of scientific theory construction, but it is also universal principles of scientific rationality and premises or guide of standard construction. Scientific philosophy should provide a high-level design to guide the scientific activities, and not because its mistake, change and denyngg its rationality. Scientific presupposition can not...