Composite tranquilizer composition and modified polymer material

The invention relates to a composite tranquilizer composition, which contains a hydrotalcite compound represented by a chemical formula 1 and one selected from a sulfur-containing carboxylate represented by a chemical formula 2, a chemical formula 3, a chemical formula 4 and a combination thereof, wherein the chemical formula 1 is [M1-xMx(OH)2](A)x/n.mH2O, the chemical formula 2 is [R -S-CHR -(CH2)t-COO]qM, the chemical formula 3 is defined in the specification, the chemical formula 4 is defined in the specification, and each code is defined in the specification. The present invention further provides a modified polymer material, which comprises an organic polymer substrate and the composite tranquilizer composition, wherein the modified polymer material can have advantages of good color stability and good processing stability through the composite tranquilizer composition. 种复合式安定剂组成物，包含种如化学式1所示的水滑石类化合物，以及种选自于化学式2、化学式3、化学式4或上述的组合所示的含硫羧酸盐。【化学式1】[MM(OH)](A)·mHO【化学式2】[R─S─CHR─(CH)─COO]M【化学式3】【化学式4】其中，