[Problem] To provide: a liquid-crystalline resin composition which is capable of giving insert-molded articles having excellent airtightness; and an insert-molded article which includes a resin member comprising the liquid-crystalline resin composition . [Solution] The above-mentioned problem is solved with a liquid-crystalline resin composition which comprises a liquid-crystalline resin, a thermoplastic resin having a glass transition temperature Tg lower than 230ºC, and a platy filler having an average particle diameter of 15-100 µm and an aspect ratio of 10 or higher, wherein the content of the liquid-crystalline resin is 40-65 mass% of the whole resin composition, the content of the thermoplastic resin is 12-35 mass% of the whole resin composition, and the content of the platy filler is 10-35 mass% of the whole resin composition.