When stopping the user's walking assist, the motor (114) starts from the section including the timing at which the user's left leg included in the first section changes from the stance phase to the swing phase in the left leg walking phase. In the first stop section up to the start section of the second section, the tension of the first wire (110a1) connecting the upper body belt (111) and the left knee belt (112a) at the front and rear of the user and the second The tension of the wire (110a2) is made smaller than the second threshold value, and in the right leg walking phase, the user's right leg included in the third section is changed from the section including the timing at which the standing leg period changes to the swing leg period. The third wire (110a) connecting the upper body belt (111) and the right knee belt (112b) at the front and rear of the user in the second stop section up to the start section of Assist device to be smaller than the second threshold tension and fourth tension of the wire (110A4) of).ユーザの歩行のアシストを停止する場合、モータ（１１４）は、左脚の歩行フェーズにおいて、第１の区間内に含まれるユーザの左脚が立脚期から遊脚期に変わるタイミングを含む区間から第２の区間の開始区間までの第１の停止区間において、ユーザの前部及び後部で上半身ベルト（１１１）及び左膝ベルト（１１２ａ）を接続する第１のワイヤ（１１０ａ１）の張力及び第２のワイヤ（１１０ａ２）の張力を第２の閾値より小さくし、右脚の歩行フェーズにおいて、第３の区間内に含まれるユーザの右脚が立脚期から遊脚期に変わるタイミングを含む区間から第４の区間の開始区間までの第２の停止区間において、前記ユーザの前部及び後部で前記上半身ベルト（１１１）及び右膝ベルト（１１２ｂ）を接続する第３のワイヤ（１１０ａ３）の張力及び第４のワイヤ（１１０ａ４）の張力を前記第２の閾値より小さくするアシスト装置。
