The invention relates to a generating device for continuous variable quantum entanglement between a quantum channel and a quantum node. The generating device mainly solves the technical problem of probability preparation of the entanglement between the quantum channel and the quantum node at present. According to the technical scheme provided by the invention, the generating device comprises a light source unit, an acousto-optic modulation system, an optical parameter amplifier, an optical beam splitter, an atom system and an entanglement measuring system, wherein the light source unit is provided with a seed optical signal aS1 and aS2 output end, a control optical signal aC output end and a local oscillation optical signal aL1 and aL2 output end; the seed optical signals aS1 and aS2 are connected with a first input end of the atom system through the acousto-optic modulation system, the optical parameter amplifier and the optical beam splitter; the control optical signal aC is connected with a second input end of the atom system through the acousto-optic modulation system; the atom system is connected with the first input end of the entanglement measuring system; a second output end of the optical beam splitter is connected with the second input end of the entanglement measuring system; the local oscillation optical signals aL1 and aL2 are connected with the third and fourth input ends of the entanglement measuring system.