The fast and high response detection of neurotoxic H_2S is of great importance for the environment. In this paper, directly electrospinning technology on the ceramic tube is developed to improve the response of H_2S detector based on superlong SnO_2 fibers. The submillimeter continuous fibers are deposited directly on ceramic tubes by in-situ electrospinning method and can keep morphology of fibers during calcination. By employing this technology, CuO-doped SnO_2 fiber H_2S detectors are fabricated, and 10% atom CuO-doped SnO_2 H_2S detector sh...