The utility model provides a sleeve pipe end screen ejector, is provided with the sealing washer including insulating cover, insulating cover middle part, runs through the scalable metal contact one end and sleeve pipe end screen contact of insulating cover, and metal pole intercommunication is drawn forth with the end screen to the scalable metal contact other end, runs through the supplementary retractable metal contact one end and sleeve pipe end screen contact, the supplementary retractable metal contact other end and assistant measuring terminal intercommunication of insulating cover. The utility model provides a sleeve pipe end screen ejector can solve the problem that can't effectively detect out sleeve pipe end screen virtual earth or current potential suspension, and whether the contact is good between accurate measuring sleeve pipe end screen ejector and end screen.