The invention provides a coiled tubing blowout preventer which comprises at least two blowout preventing devices. Each blowout preventing device is provided with an oil tube passage used for lifting and feeding an oil tube, and the oil tube passages of every two blowout preventing devices are connected through a universal adjusting device which is used for adjusting the relative position between the oil tube passages and a well mouth. When the coiled tubing blowout preventer provided by the invention is used for lifting and feeding multiple pieces of coiled tubing, the universal adjusting devices are used for adjusting the relative positions between different oil tube passages and well mouths, the situation that an operation device is shifted in direction and coiled tubing replacing and adjusting are repeatedly conducted is avoided, and coiled tubing operation efficiency is improved.