Exhibit 12.2  Certification by the Chief Financial OfficerPursuant to Section 302 of the Sarbanes-OxleyAct of 2002  I  Shu Yeh  certify that:  1. I have reviewed this annual report on Form 20-F of Chunghwa Telecom Co.  Ltd.;  2. Based on my knowledge  this report does not contain any untrue statement of a material fact or omit to  state a material fact necessary to make the statements made  in light of the circumstances under which  such statements were made  not misleading with respect to the period covered by this report;  3. Based on my knowledge  the financial statements  and other financial information included in this report   fairly present in all material respects the financial condition  results of operations and cash flows of the  company as of  and for  the periods presented in this report;  4. The company’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure  controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control  over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and  have:  (a) Designed such disclosure controls and procedures  or caused such disclosure controls and procedures  to be designed under our supervision  to ensure that material information relating to the company   including its consolidated subsidiaries  is made known to us by others within those entities   particularly during the period in which this report is being prepared;  (b) Designed such internal control over financial reporting  or caused such internal control over financial  reporting to be designed under our supervision  to provide reasonable assurance regarding the  reliability of financial reporting and the preparation of financial statements for external purposes in  accordance with generally accepted accounting principles;  (c) Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this  report our conclusions about the effectiveness of the disclosure controls and procedures  as of the end  of the period covered by this report based on such evaluation; and  (d) Disclosed in this report any change in the company’s internal control over financial reporting that  occurred during the period covered by the annual report that has materially affected  or is reasonably  likely to materially affect  the company’s internal control over financial reporting; and  5. The company’s other certifying officer(s) and I have disclosed  based on our most recent evaluation  of internal control over financial reporting  to the company’s auditors and the audit committee of the  company’s board of directors (or persons performing the equivalent functions):  (a) All significant deficiencies and material weaknesses in the design or operation of internal control over  financial reporting which are reasonably likely to adversely affect the company’s ability to record   process  summarize and report financial information; and  (b) Any fraud  whether or not material  that involves management or other employees who have a  significant role in the company’s internal control over financial reporting.  14 Date: April 20  2011  By: Shu Yeh Chief Financial Officer Name: Title: