The invention relates to a novel sucker-rod pump and coiled tubing continuous conversion operation device which comprises a coiled tubing, an oil well pump and a casing outside the coiled tubing. Thecoiled tubing is in communication to the oil well pump in a gas well through a tubing coupling, and a swimming valve cover is sleeved with the tubing coupling; the swimming valve cover is divided intoa wide-mouth pipe portion and a narrow-mouth pipe portion, a drainage opening is formed in the circumferential direction of the top end of the wide-mouth pipe portion, a through hole in a bottom tubewall of the wide-mouth pipe portion is plugged by a swimming ball valve, and a coiled tubing joint in threaded fit with the inner wall of the narrow-mouth pipe portion is arranged in the narrow-mouthpipe portion; the coiled tubing joint communicates with the coiled tubing through a coiled tubing coupling, and the side wall of the bottom of the coiled tubing joint is provided with side opening holes; and the coiled tubing coupling and the swimming valve cover are in sealed connection through a sealing ring. The continuous conversion device for sucker-rod pump drainage and coiled tubing drainage operation is provided, damage of well shutdown to a stratum is avoided, the time for stable production is prolonged, and the drainage efficiency of coalbed gas wells is improved.