A microchip-based platelet multi-function test apparatus, comprising: a sample container configured to accommodate a blood sample therein; a plurality of parallel channels configured to divide and flow the blood sample into a plurality of paths; a vacuum device (30, 40) that is connected to a rear end of each parallel channel, said vacuum device being configured to maintain constant pressure and allow the blood sample to flow along the parallel channel; a light source that is installed at a rear end side of the plurality of parallel channels and configured to radiate light to the plurality of parallel channels; and an image sensor that is configured to receive light transmitted through the blood sample in the plurality of parallel channels, to convert the light into an electrical signal, and to measure the flow distance of the blood sample flow; characterized in that the apparatus comprises a stirrer that is installed inside the sample container and configured to induce a shear flow in the blood sample; and in that a front end of each parallel channel comprises: i) a plurality of micropillars that are configured to reduce a blood sample flow rate and allow platelets to be adhered and aggregated for a platelet function test, wherein the plurality of micropillars is coated with a reagent, and wherein said reagent is different in each parallel channel; or ii) a chamber having a plurality of beads therein, wherein a through hole having a diameter smaller than that of the plurality of beads is formed in a front surface and a rear surface of the chamber, wherein the plurality of beads is coated with a reagent, and wherein said reagent is different in each parallel channel. a sample container configured to accommodate a blood sample therein; a plurality of parallel channels configured to divide and flow the blood sample into a plurality of paths; a vacuum device (30, 40) that is connected to a rear end of each parallel channel, said vacuum device being configured to maintain constant pressure and allow the blood sample to flow along the parallel channel; a light source that is installed at a rear end side of the plurality of parallel channels and configured to radiate light to the plurality of parallel channels; and an image sensor that is configured to receive light transmitted through the blood sample in the plurality of parallel channels, to convert the light into an electrical signal, and to measure the flow distance of the blood sample flow; characterized in that the apparatus comprises a stirrer that is installed inside the sample container and configured to induce a shear flow in the blood sample; and in that a front end of each parallel channel comprises: i) a plurality of micropillars that are configured to reduce a blood sample flow rate and allow platelets to be adhered and aggregated for a platelet function test, wherein the plurality of micropillars is coated with a reagent, and wherein said reagent is different in each parallel channel; or ii) a chamber having a plurality of beads therein, wherein a through hole having a diameter smaller than that of the plurality of beads is formed in a front surface and a rear surface of the chamber, wherein the plurality of beads is coated with a reagent, and wherein said reagent is different in each parallel channel. i) a plurality of micropillars that are configured to reduce a blood sample flow rate and allow platelets to be adhered and aggregated for a platelet function test, wherein the plurality of micropillars is coated with a reagent, and wherein said reagent is different in each parallel channel; or ii) a chamber having a plurality of beads therein, wherein a through hole having a diameter smaller than that of the plurality of beads is formed in a front surface and a rear surface of the chamber, wherein the plurality of beads is coated with a reagent, and wherein said reagent is different in each parallel channel.