The utility model provides a tubular sulphur deposit entrapment device, including a confined box, be equipped with corrugated pipeline in the box, the both ends of pipeline are all worn out the box with the end of giving vent to anger and are communicate with external for the inlet end and the end of giving vent to anger, inlet end, the end of giving vent to anger is equipped with heatable and catches the sulphur net, the box leaves on one side of the inlet end has the discharge gate, open the end one side of giving vent to anger there is the feed inlet, still includes thermodetector, differential pressure sensor and pressure sensor, thermodetector can the internal portion's temperature of detection case, differential pressure sensor can detect the inlet end of pipeline and the pressure differential between the end of giving vent to anger, pressure sensor is located the end of giving vent to anger of pipeline. This device can maximumly contain the element sulphur desorption in the sulphur natural gas with the height when using to reduced and taken place the sedimentary risk of sulphur in the apparatus of low reaches. This device has still that simple structure, working effect are reliable, low in manufacturing cost's advantage.