Based on the conductivity of two dimensional transition metal carbide (MXene)-Ti3C2Tx and catalytic activity of Au@Pt nanoflowers,a Ti3C2Tx/Au@Pt nanoflowers enzyme free sensor was assembled for the ultrasensitive and rapid detection of H2O2 content.The prepared Ti3C2Tx was characterized by emission scanning electron microscopy and X-ray diffraction spectrometry.Results showed that the Ti3C2Tx material exhibited a unique accordion structure, while the Ti3C2Tx/Au@Pt are centered on Au particles and surrounded by Pt particles to form the surrouding dandelion structure.The cyclic voltammogram and time current curve of H2O2 on the Ti3C2Tx/Au@Pt modified electroded were studied.Results showed that the modified electrode based on Ti3C2Tx loaded Au@Pt nanoflowers presented good linear relationship for H2O2(0.03-1 100 μmol/L),high sensitivity(detection limit:0.02 μmol/L),good anti-interference and reproducibility.Compared with the traditional titration method,the new enzyme free sensor could be more rapidly and accurately used in the detection of H2O2 in a complex environment.