The invention discloses an anti-jumping stable adjusting structure for a furniture sliding door. The anti-jumping stable adjusting structure comprises a stable adjusting device, wherein the stable adjusting device comprises a fixed seat, a shifting element and an adjusting element; the shifting element and the adjusting element are arranged on the fixed seat. The anti-jumping stable adjusting structure is characterized in that rollers are arranged on the fixed seat; an acting part is arranged on the adjusting element; a tool acts on the acting part of the adjusting element; the adjusting element rotates in a positioned way, and is used for driving the rollers and the shifting element to slide upwards and downwards in a positioned way relative to the fixed seat simultaneously and/or synchronously. Through the structural improvement, the anti-jumping stable adjusting structure has the characteristics of simple and reasonable structure, reliable performance, rapidness in adjustment, convenience in operation, long service life, high connection compactness among members, silence, stability and smoothness in an opening/closing process, small force and the like, and has high practicability.