OBJECTIVE To qualitatively analyze the chemical constituents from Tianzhi granules and their constituents absorbed into blood， and to provide reference for elucidating pharmacodynamic material basis of Tianzhi granules. METHODS UPLC-ESI-Q-TOF-MS/MS was adopted. The analysis was performed on an Agilent Eclipse Plus C18 column with mobile phase consisted of 0.5% formic acid solution-acetonitrile （gradient elution） at the flow rate of 0.3 mL/min； the column temperature was 40 ℃ ；the injection volume was 10 μL. Mass spectrometry was applied for the qualitative analysis under positive ionization mode and ESI ion source. Data were collected with MS-DIAL4.60， and then chemical constituents of the extract from Tianzhi granule （by 0.5% methanol） were analyzed by comparing with relevant literature， SciFinder， PubChem， MassBank， TCMSP， TCM-ID and other databases. The blank serum， administered serum and Tianzhi granule extract were compared to analyze the constituents absorbed into the blood. RESULTS One hundred compounds were preliminarily identified from Tianzhi granules， including 46 flavonoids， 8 organic acids， 8 alkaloids， 6 terpenes， 6 coumarins， 2 quinones， 1 steroids， 7 glycosides and 16 others. Based on it， 10 prototype constituents absorbed into blood were identified preliminarily， including genistein， melatonin A， chrysin-7-O- β-glucuronide， apigenin-7-O-glucuronide， wogonin， 6-O-methylbaicalin are flavonoids， 2-hydroxyquinoline and isonacolline are alkaloids， 7-hydroxycoumarin is coumarins，1-indanol is others. CONCLUSIONS 2-hydroxyquinoline， 7-hydroxycoumarin， genistein， melatonin A， isonocolline， chrysin-7-O-β-glucuronide， apigenin-7-O-glucuronide， wogonin and 6-O-methylbaicalin may be the pharmacodynamic material basis of Tianzhi granules.