Two　level　loadings　of　unequal　stress　amplitude　and　unequal　mean　stress　were　applied　on　the　two-spot　tension-shear　spot　welds.　Experimental　results　show　that　there　exists　stress　sequence　effect　under　two-level　loading.　There　exists　exercise　effect　under　low-high　loading,　the　damage　accumulated　by　linear　damage　accumulation　rule　is　higher　than　1;　there　exists　overload　retardation　under　high-low　loading,　the　damage　accumulated　by　linear　damage　accumulation　rule　is　also　over　1.　Under　high-low　loading,　residual　lives　under　low　stress　level　are　longer　than　residual　life　calculated　from　linear　damage　accumulation　rule;　some　residual　fatigue　lives　are　even　longer　than　total　life　under　low　stress　alone.　The　damage　accumulation　result　under　high-low　loading　indicates　that　the　periphery　of　spot　welds　behaves　as　a　notch.