The invention discloses a method of separating, gathering and measuring platinum, palladium and rhodium in automotive catalyst. The method comprises the following steps: (1) the dissolution of a sample: weighting 0.5-1.5g of uniform catalyst sample with the grain size of 150 meshes or less to place in a polytetrafluoroethylene digestion tank, adding HCl and H2O2, closing the lid; placing the digestion tank in a constant temperature oven to dissolve the catalyst, withdrawing the digestion tank, transferring all the materials into a beaker by using distilled water, evaporating, filtrating, adding filtrate in a volumetric flask, performing constant volume, mixing evenly; (2) the coprecipitation, separation and enrichment of tellurium: pipetting a certain amount of sample solution into a beaker, adding concentrated hydrochloric acid and tellurium solution, controlling the solution to boil on an electric hot plate, dropwise adding SnCl2 solution to ensure that the yellow color disappears, alarge number of precipitate is prepared and some SnCl2 solution is excessive, heating continuously, replenishing tellurium solution, boiling the solution to boiling gently, taking the beaker down tocool the solution to room temperature, filtrating the solution, washing with water, precipitating; dropwise adding fresh warm aqua regia to dissolve, washing the funnel with water for several times; heating the solution to be nearly dry, transferring the obtained product with HCl to a volumetric flask, performing constant volume, mixing evenly; (3) measuring the content of Pt, Pd and Rh with ICP-AES under optimum instrument conditions.