A walking assistance device having an ankle joint limited in a swingable range in a rolling direction, enabling a user to open his/her legs apart more easily. The walking assistance device includes a seating member 1, a pair of leg links 2 and 2 which support the seating member 1 from below, and a ground contact member 8 connected to each leg link 2 through an ankle joint 7. The ankle joint 7 has a coupling mechanism 100 which includes a joint shaft member 106 and a retaining portion which swingably retains the joint shaft member 106 in the rolling direction in a predetermined range φ. The joint shaft member 106 is inclined to an abduction side in the rolling direction from the middle position of the predetermined range φ in which the joint shaft member is swingable in the rolling direction when the walking assistance device is in an upright state.