Abstract: The invention relates to an optical fibre splicing module. The optical fibre splicing module includes a base and a cover board, with two operation planes being arranged on the base, i.e. an upper operation plane provided with an optical fibre cable core winding area, a bare fibre winding and fusion welding area and an adapter holder, and a lower operation plane provided with a fibre pigtail winding area. 16 or 32 bayonets are arranged on the adapter holder, the bayonets are longitudinally arranged along the vertical direction of the operation planes. The size of the bayonets is just suitably connected to the vertically placed adapters. Not only the number of bayonets is increased to a number meeting the requirements of the optical splitter, but also the volume of the entire optical fibre splicing module can be ensured not to be increased by using the arrangement of the bayonets and the matching method of the bayonets with the vertically arranged adapters.