The present invention relates to a functional shoe insert capable of preventing deformation of the toe or foot by distributing the load or impact transmitted to the foot. The present invention is a functional shoe insert whose lower surface is attached to the insole or insole of the shoe to prevent deformation of the toe by dispersing the impact transmitted to the foot, and moving toward the front and rear of the shoe to correspond to the arch shape of the foot arch It is characterized in that it has an arcuate shape of decreasing thickness and has a body having an indented portion inwardly formed at the rear, and an impact dispersing portion protruding from the upper surface of the body to correspond to the second metatarsal and third metatarsal bones of the foot. Advantageous Effects of Invention According to the present invention, by dispersing the load or impact transmitted to the foot, it is possible to prevent the shape of the toe or foot from being deformed, thereby preventing valgus and plantar fasciitis.
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