A system comprising: a bottle blow moulding machine; a linkage of mould opening and closing and bottom mould elevating, mounted on the bottle blowing machine, comprising: a mould opening and closing assembly comprising a fixed mould plate, a bottom mould slidable relative to the fixed mould plate in vertical direction, and a moving mould plate rotatably connected with the fixed mould plate by a rotation shaft, whereby when the mould opening and closing assembly is in the mould closing state, the fixed mould plate, the moving mould plate and the bottom mould together enclose to provide a cavity; characterized in that the linkage also comprises: an elevating assembly comprising a protrusion fixedly disposed on the rotation shaft, an elevating rod fixedly connected with the bottom mould and a sliding block fixed on the elevating rod, a guiding groove being opened on the protrusion, the sliding block being slidably inserted into the guiding groove, in the course of rotation of the rotation shaft, the contact position of the guiding groove with the sliding block rises or descends and the sliding block moves in up-down direction under the guiding of the guiding groove; and a power source for driving the rotation of the rotation shaft. a bottle blow moulding machine; a linkage of mould opening and closing and bottom mould elevating, mounted on the bottle blowing machine, comprising: a mould opening and closing assembly comprising a fixed mould plate, a bottom mould slidable relative to the fixed mould plate in vertical direction, and a moving mould plate rotatably connected with the fixed mould plate by a rotation shaft, whereby when the mould opening and closing assembly is in the mould closing state, the fixed mould plate, the moving mould plate and the bottom mould together enclose to provide a cavity; characterized in that the linkage also comprises: an elevating assembly comprising a protrusion fixedly disposed on the rotation shaft, an elevating rod fixedly connected with the bottom mould and a sliding block fixed on the elevating rod, a guiding groove being opened on the protrusion, the sliding block being slidably inserted into the guiding groove, in the course of rotation of the rotation shaft, the contact position of the guiding groove with the sliding block rises or descends and the sliding block moves in up-down direction under the guiding of the guiding groove; and a power source for driving the rotation of the rotation shaft. a mould opening and closing assembly comprising a fixed mould plate, a bottom mould slidable relative to the fixed mould plate in vertical direction, and a moving mould plate rotatably connected with the fixed mould plate by a rotation shaft, whereby when the mould opening and closing assembly is in the mould closing state, the fixed mould plate, the moving mould plate and the bottom mould together enclose to provide a cavity; characterized in that the linkage also comprises: an elevating assembly comprising a protrusion fixedly disposed on the rotation shaft, an elevating rod fixedly connected with the bottom mould and a sliding block fixed on the elevating rod, a guiding groove being opened on the protrusion, the sliding block being slidably inserted into the guiding groove, in the course of rotation of the rotation shaft, the contact position of the guiding groove with the sliding block rises or descends and the sliding block moves in up-down direction under the guiding of the guiding groove; and a power source for driving the rotation of the rotation shaft. an elevating assembly comprising a protrusion fixedly disposed on the rotation shaft, an elevating rod fixedly connected with the bottom mould and a sliding block fixed on the elevating rod, a guiding groove being opened on the protrusion, the sliding block being slidably inserted into the guiding groove, in the course of rotation of the rotation shaft, the contact position of the guiding groove with the sliding block rises or descends and the sliding block moves in up-down direction under the guiding of the guiding groove; and a power source for driving the rotation of the rotation shaft.