The present invention provides a ladder cord lattice for window blinds. The ladder cord lattice includes a front strip, a rear strip and multiple slat sustaining portion arranged at intervals between the front and rear strips. There is a connecting and positioning portion, being integrally formed on the top of front and rear strip and lacking the slat sustaining portion. There are tailoring point identification bulges, and snapper locating point identification bulges. There is a clear identification point for tailoring and feeding of ladder cord lattice and for fixing of the snapper via the tailoring point identification bulges and snapper locating point identification bulges, thus reducing the error of feeding and assembly, and improving the operating efficiency, accuracy and quality for higher applicability and industrial efficiency.
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