The invention discloses an acute coronary syndrome symptom diagnosis model construction and application method. The construction method comprises the following steps: collecting a blood sample and clinical data of a patient suffering from chest pain in hospital admission, centrifuging the blood sample by using an EDTA (Ethylene Diamine Tetraacetic Acid) anticoagulation tube, and separately storing a plasma sample obtained after centrifugation in a refrigerator at the temperature of-80 DEG C; the method comprises the following steps: carrying out protein precipitation on a plasma sample, oscillating, centrifuging, taking a supernatant for sample introduction, separating 12 ceramides in the plasma sample by using an ultra-high performance liquid chromatography system, establishing a calibration curve by using a mass spectrometer through a mass spectrum isotope internal standard quantification method, and detecting 12 ceramide molecule concentration values of all plasma samples; fitting a linear model of a logistic regression method based on traditional clinical variables of a patient with chest pain and troponin and ceramide data, and calculating optimal model parameters to obtain an acute coronary syndrome symptom diagnosis model; based on the acute coronary syndrome symptom diagnosis model, whether the patient is an ACS patient can be rapidly judged, and the accuracy is high.