To deal with the dynamic and im-balanced traffic requirements in Low Earth Orbit satellite networks, several distributed load balancing routing schemes have been proposed. However, because of the lack of global view, these schemes may lead to cascading congestion in regions with high volume of traffic. To solve this problem, a Hybrid-Traffic-Detour based Load Balancing Routing (HLBR) scheme is proposed, where a Long-Distance Traffic Detour (LTD) method is devised and coordinates with distributed traffic detour method to perform self-adap-tive load balancing. The forwarding path of LTD is acquired by the Circuitous Multipath Calculation (CMC) based on prior geograph-ical information, and activated by the LTD-Shift-Trigger (LST) through real-time conges-tion perception. Simulation results show that the HLBR can mitigate cascading congestion and achieve efficient traffic distribution.