Statute Governing Issuance of R.O.C. Visas in Foreign Passports Article 12

When processing visa applications, the Ministry of Foreign Affairs and ROC overseas missions shall take into consideration the national interest, the individual status of applicants, and the relations between the resident countries of the applicants and the ROC. The Ministry of Foreign Affairs and ROC overseas missions may refuse to issue visas to an a foreign passport holder who:1.has a criminal record within or outside the ROC, or has been denied entry, ordered to leave or deported by the ROC government.2.has entered the ROC illegally.3.has a contagious disease, mental illness or other diseases, which may be detrimental to public health or social order.4.has made a false statement or withheld a fact relating to the purpose of entry into the ROC as declared on the visa application.5.has overstayed a visitor or resident visa or worked illegally in the ROC.6.is believed through convincing evidence to lack financial support or intends to engage in unauthorized employment in the ROC.7.is in possession of a foreign passport that is not recognized by the ROC government, or whose foreign status is not recognized by the ROC government.8.is in possession of a foreign passport that has expired or that if lost, cannot be reissued or extended.9.is in possession of a foreign passport or other travel document that was illegally obtained, forged or tampered with.10.is believed through convincing evidence to be intending to evade laws in order to come to the ROC.11.is suspected of engaging in terrorist activities.12.is believed through convincing evidence to be detrimental to the national interest, public safety, public order, or the morals of the ROC.The Ministry of Foreign Affairs and ROC overseas missions are not required to give any reason to a visa applicant for refusal based on any of the above stipulations.
中文原文 外國護照簽證條例第12條
外交部及駐外館處受理簽證申請時,應衡酌國家利益、申請人個別情形及其國家與我國關係決定准駁;其有下列各款情形之一,外交部或駐外館處得拒發簽證:
一、在我國境內或境外有犯罪紀錄或曾遭拒絕入境、限令出境或驅逐出境者。
二、曾非法入境我國者。
三、患有足以妨害公共衛生或社會安寧之傳染病、精神病或其他疾病者。
四、對申請來我國之目的作虛偽之陳述或隱瞞者。
五、曾在我國境內逾期停留、逾期居留或非法工作者。
六、在我國境內無力維持生活,或有非法工作之虞者。
七、所持護照或其外國人身分不為我國承認或接受者。
八、所持外國護照逾期或遺失後,將無法獲得換發、延期或補發者。
九、所持外國護照係不法取得、偽造或經變造者。
十、有事實足認意圖規避法令,以達來我國目的者。
十一、有從事恐怖活動之虞者。
十二、其他有危害我國利益、公共安全、公共秩序或善良風俗之虞者。
依前項規定拒發簽證時,得不附理由。

English translation for reference only; the Chinese text prevails. Not legal advice.