This disclosure is related to trousers with a waist protection belt (1). The trousers include the waist protection belt (31, 310) that is detachably attached to a belt cloth (10) of the trousers (1), a trouser body (1a) that includes a stretchable cloth (15) at a position corresponding to a waist part of a back body part (3) of the trousers, and a position adjusting part (71) that is provided at substantially a center of the waist protection belt (31, 310) and is provided at a position on a back surface of the belt cloth corresponding to the waist part of the trouser body (1a). The position adjusting part is configured to adjustably change an attachment position of the waist protection belt (31, 310) in a vertical direction with respect to the trouser body (1a).
