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Valley degrees of freedom, providing a novel way to increase capacity and efficiency of information processing, have become an important instrument for photonics. Experimental studies on photonic topological valley kink states at interfaces between regions with opposite valley‐Chern numbers have attracted much attention; however, they are restricted to zigzag‐type interfaces, largely limiting their applications such as geometry‐dependent topological channel intersections. Here, valley kink states at generic interfaces in subwavelength substrate‐integrated photonic circuitry are experimentally demonstrated and manipulated. The robustness of the kink states is verified by measuring transmissions of the kink states through twisted interfaces and interfaces with disorders. Based on the valley kink states at generic interfaces, several topological channel intersections where photonic transport paths are related to …