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This invention discloses an end-to-end collaborative delay-redundant time-sensitive flow scheduling method, belonging to the fields of optical networks and industrial internet. Based on a ring queuing and forwarding model, this invention expands the two queues used for transmitting time-triggered flows in the forwarding model to three, one of which is a backup queue. Time-triggered flows entering the backup queue will be transmitted in the next time slot. Priority switching of the time-triggered flow queues in the switch buffer is timed to ensure that data packets at the switch node are transmitted within two cycles. In an optical network scenario, end-to-end collaborative delay-redundant time-sensitive flow scheduling is achieved based on time-sensitive networking. By improving the traditional ring queuing and forwarding model, a dedicated backup queue is set up for time-triggered flows, providing a protected transmission window for them. While ensuring the transmission delay of time-triggered flows, this method maximizes the number of successfully scheduled time-triggered flows, thereby improving the overall throughput of time-triggered flows in the optical network.