The business model driving “involution-style” competition among food delivery platforms relies on low labor costs, using tactics such as predatory pricing to recklessly expand order volume for short-term profits. From the perspective of labor law regulation, establishing a legal system for the labor standards of online delivery workers and granting riders statutory protections regarding wages and working hours, can directly undermine the commercial foundation of the platforms’ “involution-style” competition. This would compel platforms to pursue measured business expansion, thus achieving the effect of “using labor law to curb competition law”. The construction of this legal system should be based on the new digital-era work mode of “online autonomous order acceptance”, breaking through the traditional “time-based” and “piece-rate” systems, and establishing a “mileage-based” system centered on delivery mileage—guaranteeing riders’ compensation rights through statutory minimum wage per mileage, and setting a rigid floor for wage deductions by the platform. Furthermore, a median value-based algorithm can be used to set the maximum mileage per order to protect riders’ rights to reasonable working hours. A flexible approach combining system reminders with automatic flow control should be implemented to prevent riders from falling into digital overwork risks.