Duty invalidity is the corresponding state of employee's occupational accident and professional disease insurance for government officials. Particularly invalidity of soldiers due to incidents happened during military services is the most functional and applicable area of duty invalidity insurance.In Social Securities and General Health Insurance Act no.5510, the coverage of being deemed duty invalid is extended comparing with abolished Pension Fund Act no.5434. We explained the conditions to be deemed duty invalid with those amendments and supreme court's decisions from the Act no.5435 days in the first part.In second part, we emphasized the conditions where the insuree cannot entitled to get a pension due to his own fault. In third part, we reviewed specific issues like the declaration made technically to claim rights provided to the insuree as result of duty invalidity, calculation of pension, beginning of the pension, rework of pension beneficiaries.As to fourth part, we put forth the similarities and differences between duty invalidity and ordinary invalidity and occupational accident and professional disease insurance. Lastly, we mentioned persons who is in the applicable sphere of the duty invalidity insurance arranged in Act no.5510.According to the transitional provision 4/III of Act no.5510, those who are entitled to be applied the provisions of Act no.5510 are the persons paused after working as an insuree in the period of Act no.5434, first involved into coverage of the article 4-c of the Act no.5510 by restarting to work now and those who didn't have any insurance before and start working within the coverage of article 4-c of the Act no.5510.