The invention discloses a lupus anticoagulant detection kit. The lupus anticoagulant detection kit comprises an SCT-S screening reagent, an SCT-C confirmation reagent and an SCT-CaCl2 solution, the SCT-S screening reagent comprises purified silica sol, recombinant phospholipid, a first heparin neutralizer, a first buffer solution and a first auxiliary material; the SCT-C confirmation reagent comprises purified silica sol, recombinant phospholipid, a second heparin neutralizer, a second buffer solution and a second auxiliary material; the SCT-CaCl2 solution is prepared from calcium ions; the SCT-S screening reagent, the SCT-C confirmation reagent and the SCT-CaCl2 solution are in a liquid state; the content of recombinant phospholipid in the SCT-S screening reagent is lower than that of recombinant phospholipid in the SCT-C confirmation reagent; the purified silica sol and the recombinant phospholipid are matched, the reagent sensitivity is high, the positive detection rate is increased, and false negative is reduced; comprising a heparin neutralizer to eliminate the influence of heparin and improve the accuracy; the reagent is liquid, convenient to use and good in stability.