The invention discloses a webpage redirection jumping method and system, and the method comprises the steps: a client accesses a gateway through a local area network, and generates a data flow; the gateway receives the data stream and captures target data in an 80 port and a 443 port; a data flow direction rule is established to guide the sending flow direction of the target data; the target datais re-sent to a 443 port of the nginx service by using the target address conversion; the nginx service verifies the SSL certificate to modify the head information of the target data, and generates jump data; the nginx service returns the jump data to the client through the gateway when the client accesses a gateway through a local area network, an HTTPS webpage which cannot be connected with theclient can be modified into an HTTP webpage which can be connected with the client after being verified by the nginx service through an SSL certificate, so that the client can browse a local area network, and the situation that the client cannot browse the local area network due to the fact that the client obtains a blank page which cannot be connected with the client is avoided.