A vibration prevention device (10, 50, 60) comprising: a first attachment member having a tubular shape that is connected to one of a vibration source and a vibration receiver and a second attachment member that is connected to the other thereof; an elastic body that connects two attachment members (11, 12); and a partition member that partitions a liquid chamber (14, 15) in the first attachment member having a liquid enclosed therein into a first liquid chamber and a second liquid chamber, at least one of the first liquid chamber and the second liquid chamber having the elastic body as a part of a wall surface thereof, wherein the partition member is provided with a vortex chamber unit (31a, 31b) that causes the two liquid chambers (14, 15) to communicate with each other, wherein the vortex chamber unit (31a, 31b) includes a vortex chamber (33a, 33b) that causes a liquid flowing therein to form a vortex flow, a rectification passage (34a, 34b) that causes one liquid chamber of the two liquid chambers (14, 15) to communicate with the vortex chamber (33a, 33b) and that is opened in the vortex chamber (33a, 33b) in a circumferential direction of the vortex chamber (33a, 33b), and a communication hole (32a, 32b) that causes the other liquid chamber of the two liquid chambers (14, 15) to communicate with the vortex chamber (33a, 33b), the vortex chamber (33a, 33b) forms a vortex flow of the liquid in the vortex chamber (33a, 33b) depending on a flow rate of the liquid flowing from the rectification passage (34a, 34b) and causes the liquid to flow from the communication hole (32a, 32b), the vortex chamber unit (31a, 31b) includes a plurality of first vortex chamber units in which a first vortex chamber as the vortex chamber communicates with the first liquid chamber via a first rectification passage as the rectification passage and communicates with the second liquid chamber via a first communication hole as the communication hole, the partition member partitions the liquid chamber (14, 15) in an axial direction of the first attachment member, an axis of the vortex chamber (33a, 33b) extends along an intersection plane, characterized in that the axis of the first attachment member crosses the intersection plane. a first attachment member having a tubular shape that is connected to one of a vibration source and a vibration receiver and a second attachment member that is connected to the other thereof; an elastic body that connects two attachment members (11, 12); and a partition member that partitions a liquid chamber (14, 15) in the first attachment member having a liquid enclosed therein into a first liquid chamber and a second liquid chamber, at least one of the first liquid chamber and the second liquid chamber having the elastic body as a part of a wall surface thereof, wherein the partition member is provided with a vortex chamber unit (31a, 31b) that causes the two liquid chambers (14, 15) to communicate with each other, wherein the vortex chamber unit (31a, 31b) includes a vortex chamber (33a, 33b) that causes a liquid flowing therein to form a vortex flow, a rectification passage (34a, 34b) that causes one liquid chamber of the two liquid chambers (14, 15) to communicate with the vortex chamber (33a, 33b) and that is opened in the vortex chamber (33a, 33b) in a circumferential direction of the vortex chamber (33a, 33b), and a communication hole (32a, 32b) that causes the other liquid chamber of the two liquid chambers (14, 15) to communicate with the vortex chamber (33a, 33b), a vortex chamber (33a, 33b) that causes a liquid flowing therein to form a vortex flow, a rectification passage (34a, 34b) that causes one liquid chamber of the two liquid chambers (14, 15) to communicate with the vortex chamber (33a, 33b) and that is opened in the vortex chamber (33a, 33b) in a circumferential direction of the vortex chamber (33a, 33b), and a communication hole (32a, 32b) that causes the other liquid chamber of the two liquid chambers (14, 15) to communicate with the vortex chamber (33a, 33b), the vortex chamber (33a, 33b) forms a vortex flow of the liquid in the vortex chamber (33a, 33b) depending on a flow rate of the liquid flowing from the rectification passage (34a, 34b) and causes the liquid to flow from the communication hole (32a, 32b), the vortex chamber unit (31a, 31b) includes a plurality of first vortex chamber units in which a first vortex chamber as the vortex chamber communicates with the first liquid chamber via a first rectification passage as the rectification passage and communicates with the second liquid chamber via a first communication hole as the communication hole, the partition member partitions the liquid chamber (14, 15) in an axial direction of the first attachment member, an axis of the vortex chamber (33a, 33b) extends along an intersection plane, characterized in that the axis of the first attachment member crosses the intersection plane.