The present invention discloses a flexible substrate-based high-dynamic GNSS receiver hardware design and a navigation method. The method is as follows: key components of the receiver are an active antenna, an RF front-end processing module, a baseband signal digital processing module and a positioning resolving module, and hardware is implemented in a manner of software and hardware combination.Functions of the modules are as follows: the antenna converts a received satellite signal into a current signal, a high-frequency low noise amplifier amplifies the signal, compensates for attenuationof the signal during transmission, enhances a signal-to-noise ratio of the signal, the signal enters the RF front-end by passing through a band-pass filter; the RF front-end processing module performsamplification, frequency conversion, filtering, and analog-digital conversion on the satellite signal, and finally obtains a digital intermediate frequency signal; the baseband signal digital processing module performs processing of capturing, tracking, bit synchronization and frame synchronization on the digital intermediate frequency signal, to obtain a navigation measured value and a navigation telegraph text; and the positioning resolving module performs positioning resolving by using the navigation measured value and the navigation telegraph text, and finally obtains satellite information of a user, to obtain a positioning observed value.