The present application relates to nitrogen-containing fused ring compounds shown by general formula (I), a pharmaceutically acceptable salt thereof and a stereoisomer thereof as CRTH2 antagonist, wherein X 1 , X 2 , X 3 , X 4 , X 5 , W, X, Y, L 1 , L 2 , L 3 , A, B are as defined in the description； the present application further relates to a method for preparing the compounds, a pharmaceutical formulation and a pharmaceutical composition comprising the compounds, a use of the compounds for the manufacture of a medicament for the treatment and/or prevention of diseases related to activity of CRTH2.
