OBJECTIVE: To investigate the effect of different processing methods on 4 kinds of flavonoids contents in salt-processed Cuscuta chinensis. METHODS: Salt-processed C. chinensis piece was processed with different baking temperature (70 ℃, 100 ℃, 130 ℃, 160 ℃, 190 ℃ and 210 ℃), baking time (10 min, 15 min, 30 min, 45 min, 60 min and 75 min) and moistening time (0.5 h, 1 h, 2 h, 4 h and 6 h). HPLC was adopted for contents determination of hyperoside, rutin, quercetin and kaempferol: the column was Synergi 4u Hydro-Rp 80A with mobile phase of methanol - 0.1% phosphoric acid (gradient elution) at a flow rate of 1.0 ml/min, the detection wavelength was 360 nm, and column temperature was 35 ℃. RESULTS: The linear range was 0.416-12.48 μg for hyperoside (r=0.999 9), 0.14-4.2 μg for rutin (r=0.999 9), 0.185-5.55 μg for quercetin (r=0.999 9) and 0.078-2.34 μg (r=0.999 8); RSDs of precision, stability and reproducibility tests were lower than 3%; recoveries were 95.55%-99.74% (RSD=2.12%,n=6), 95.96%-101.42% (RSD=2.01%,n=6), 95.76%-102.75% (RSD=2.77%,n=6), 99.42%-104.93% (RSD=2.02%,n=6). The flavonoids in salt-processed C. chinensis showed highest contents when baking temperature was 160℃, baking time was 60 min and moistening time was 2 h. CONCLUSIONS: Different processing methods have certain effects on flavonoids contents in salt-processed C. chinensis.