OBJECTIVE： To establish a method for the rapid detection of the volatile constituents in Centella asiatica. METHODS： HS-SPME-GC/MS was adopted， the chromatographic conditions： column was HP-5 MS fused silica capillary column， carrier gas was high-purity helium （99.999％） at a flow rate of 1.0 ml/min， inlet temperature was 250 ℃ （temperature programmed）， split injection， split ratio was 10 ∶ 1. MS conditions： ionization was electrospray ionization source， ionization energy was 80 eV， ion source temperature was 230 ℃， quadrupole temperature was 150 ℃， the transmission line temperature was 280 ℃， electron multiplier voltage was 1 494 V， and scan range was m/z 30-400. Retention index method was combined with peak area normalization method to determine the relative percentage contents of each volatile constituent. RESULTS： Totally 16 volatile constituents were identified from C. asiatica， accounting for 79.22％ to the total peak area， the main volatile constituents were （E） -β- farnesene （36.97％）， caryophyllene （13.61％），germacrene D（10.95％）， α-acoradiene （2.76％） and （-）-alloaromadendrene （2.33％）. CONCLUSIONS： The study basically clears the main volatile constituents of C. asiatica， and provides certain scientific basis.