A ratchet wrench actuator structure has a head part and a shank part, said head part has a first accommodation section, a second accommodation section, and a third accommodation section; a ratchet member is positioned in said first accommodation section; a clamping piece is disposed in said second accommodation section; a change-over switch has at least one driven part disposed in said third accommodation section; and a resisting spring has a front resisting part, a middle resilience part, and a rear resisting part.