The invention relates to a tap switch over-stroke static contact. The static contact comprises a static contact body. The static contact body is in a sheet-type contact structure, and comprises a wiring end and a working end, wherein the working end is provided with an upper contact segment and a lower contact segment. The static contact also comprises an over-stroke device. The over-stroke device comprises arc bosses arranged at the outer side ends of the two ends of the upper contact segment and/ or the lower contact segment respectively; the outer sides of the arc bosses at the two ends of the upper contact segment are arranged in an inclined downward manner; the outer sides of the arc bosses at the two ends of the lower contact segment are arranged in an inclined upward manner; the height of the highest point of the arc bosses is larger than that of the contact position of a moving contact and the static contact body; and the two sides of the highest point are in curved surface transition. Operation hand feeling of a tap switch is improved, and positioning is more accurate.