The utility model belongs to the technical field of coiled tubing drilling. The utility model relates to a check valve, in particular to a coiled tubing drilling cable-passing bivalve check valve. Thedevice is characterized by comprising an outer cylinder assembly, wherein the double-clack valve assembly and the smooth-skin cable sealing assembly are respectively arranged in the outer cylinder assembly; the outer cylinder assembly comprises an upper joint; eccentric cable penetrating sleeve, the lower joint is arranged in a cable channel on one side of the eccentric cable penetrating sleeve thick wall; the double-clack valve assembly comprises two clack type valves, each clack type valve comprises a valve seat, a valve clack, a valve shaft and a torsion spring, and the optical cable sealing assembly comprises an upper top cover, a single-core optical cable penetrating through the upper top cover to enter a cable channel, a sealing sleeve set arranged at the lower end of the single-core optical cable and a cable sealing sleeve top cover. The device is simple in structure and safe and reliable to use; slurry can be prevented from being reversely sprayed, stratum fluid enters a drilling tool string through a drill bit water hole, power is supplied, data signals are transmitted, and the method is suitable for the coiled tubing electro-hydraulic control type drilling technology.