The invention discloses a lipoprotein (a) detection kit which is characterized by consisting of a reagent 1, a reagent 2 and a working calibration solution. The reagent 1 consists of a buffer solution, bull serum albumin (BSA), a surfactant, goat IgG and NaN3; the reagent 2 consists of a buffer solution, a lipoprotein (a) monoclonal antibody latex microsphere, BSA, the surfactant, the goat IgG, a stabilizer and NaN3. The lipoprotein (a) detection kit can be applied to a fully automatic biochemical analyzer, the detection result is high in accuracy, and the lipoprotein (a) has high comparability with absolute concentration of lipoprotein (a) of different crowds and different sizes. Moreover, the lipoprotein (a) detection kit does not have a cross reaction with plasminogen, is not interfered by rheumatoid factors and is high in reagent stability, convenient to use and convenient for large-scale popularization, only a monoclonal antibody of the lipoprotein (a) is needed, and the preparation cost and time of the kit are saved.