A liquid-enclosed vibration-damping device , comprising: a first mounting member configured to have a tubular shape and connected to one of a vibration generator and a vibration absorber, and a second mounting member connected to the other of the vibration generator and the vibration absorber; an elastic body configured to elastically connect the first and second mounting members ; and a partition member configured to partition a liquid chamber within which a liquid (L) is enclosed and which is disposed within the first mounting member into a primary liquid chamber that uses the elastic body as a part of a wall surface thereof and a secondary liquid chamber , wherein the partition member is formed with a restriction passage configured to communicate the primary and secondary liquid chambers with each other, characterized in that a porous body having a plurality of pores is arranged in the restriction passage , the pores being disposed in parallel so as to communicate a primary liquid chamber side of the restriction passage and a secondary liquid chamber side of the restriction passage with each other, wherein the porous body is arranged in the opening of the restriction passage which is at the side of the primary liquid chamber and is configured to divide into fine bubbles the bubbles created when the liquid (L) in the secondary liquid chamber returns to the primary liquid chamber through the restriction passage and the pressure of the primary liquid chamber becomes a negative pressure, thereby reducing the vapor pressure of the liquid (L) in the restriction passage and partly evaporating the liquid (L). a first mounting member configured to have a tubular shape and connected to one of a vibration generator and a vibration absorber, and a second mounting member connected to the other of the vibration generator and the vibration absorber; an elastic body configured to elastically connect the first and second mounting members ; and a partition member configured to partition a liquid chamber within which a liquid (L) is enclosed and which is disposed within the first mounting member into a primary liquid chamber that uses the elastic body as a part of a wall surface thereof and a secondary liquid chamber , wherein the partition member is formed with a restriction passage configured to communicate the primary and secondary liquid chambers with each other, characterized in that a porous body having a plurality of pores is arranged in the restriction passage , the pores being disposed in parallel so as to communicate a primary liquid chamber side of the restriction passage and a secondary liquid chamber side of the restriction passage with each other, wherein the porous body is arranged in the opening of the restriction passage which is at the side of the primary liquid chamber and is configured to divide into fine bubbles the bubbles created when the liquid (L) in the secondary liquid chamber returns to the primary liquid chamber through the restriction passage and the pressure of the primary liquid chamber becomes a negative pressure, thereby reducing the vapor pressure of the liquid (L) in the restriction passage and partly evaporating the liquid (L). <EOS>