A drum washing machine, comprising: an outer tank, configured in a shell; a drum, configured in the outer tank and capable of rotating by using a horizontal axis or an inclination axis inclining relative to a horizontal direction as a center; a rotating body, arranged at a rear part of the drum and provided with a protruding part in contact with washings on a surface of the rotating body; a driving part, capable of operating in a first driving form and a second driving form, wherein the first driving form is a driving form that enables the drum and the rotating body to rotate at different rotating speeds, and the second driving form is a driving form that enables the drum and the rotating body to integrally rotate at a same rotating speed, wherein the driving part comprises a driving motor that generates a torque for enabling the drum and the rotating body to rotate; the drum washing machine further comprises a motor driving part for providing driving current to the driving motor, and a current detecting part for detecting the driving current, and a control part, characterized in that, the control part detects load quantity of the washings in the drum, and enables the driving part to operate in the second driving form while detecting the load quantity; wherein the control part enables the driving part to operate in the second driving form so that the drum rotates at a first rotating speed at which the washings are at least attached to an inner circumferential surface of the drum, and detects the load quantity based on rotating load applied to the drum when the drum rotates at the first rotating speed; and the control part, enables the driving motor to operate in the second driving form so that the drum rotates at the first rotating speed, and detects the load quantity based on magnitude of the driving current detected by the current detecting part when the drum rotates at the first rotating speed. an outer tank, configured in a shell; a drum, configured in the outer tank and capable of rotating by using a horizontal axis or an inclination axis inclining relative to a horizontal direction as a center; a rotating body, arranged at a rear part of the drum and provided with a protruding part in contact with washings on a surface of the rotating body; a driving part, capable of operating in a first driving form and a second driving form, wherein the first driving form is a driving form that enables the drum and the rotating body to rotate at different rotating speeds, and the second driving form is a driving form that enables the drum and the rotating body to integrally rotate at a same rotating speed, wherein the driving part comprises a driving motor that generates a torque for enabling the drum and the rotating body to rotate; the drum washing machine further comprises a motor driving part for providing driving current to the driving motor, and a current detecting part for detecting the driving current, and a control part, characterized in that, the control part detects load quantity of the washings in the drum, and enables the driving part to operate in the second driving form while detecting the load quantity; wherein the control part enables the driving part to operate in the second driving form so that the drum rotates at a first rotating speed at which the washings are at least attached to an inner circumferential surface of the drum, and detects the load quantity based on rotating load applied to the drum when the drum rotates at the first rotating speed; and the control part, enables the driving motor to operate in the second driving form so that the drum rotates at the first rotating speed, and detects the load quantity based on magnitude of the driving current detected by the current detecting part when the drum rotates at the first rotating speed.