*Exhibit      31.1*

**PART      II.**
*CERTIFICATION*

| 1. | I                have reviewed this quarterly report on Form 10-Q Yongye Biotechnology                International, Inc. |   |
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| 2. | Based                on my knowledge, this quarterly 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 quarterly report; |   |
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| 3. | Based                on my knowledge, the financial statements, and other financial information                included in this quarterly report, fairly present in all material                respects                the financial condition, results of operations and cash flows of                the                registrant as of, and for, the periods presented in this quarterly                report. |   |
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| 4. | The                registrant’s other certifying officer 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))for the registrant                and have: |   |
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|  | (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 registrant, 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; |
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|  | (b) | designed                    such internal controls over financial reporting, or caused such                    internal                    controls 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. |
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|  | (c) | evaluated                      the effectiveness of the registrant’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 |
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|  | (d) | disclosed                    in this report any change in the registrant’s internal control over                    financial reporting that occurred during the registrant’s most recent                    fiscal quarter that has materially affected, or is reasonably                    likely to                    materially affect, the registrant’s internal control over financial                    reporting; and |
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| 5. | The                registrant’s other certifying officer and I have disclosed, based on our                most recent evaluation of internal control over financial reporting,                to                the registrant’s auditors and the audit committee of registrant’s board of                directors: |   |
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|  | (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 registrant’s ability to record,                    process, summarize and report financial information;                    and |
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|  | (b) | any                    fraud, whether or not material, that involves management or other                    employees who have a significant role in the registrant’s internal control                    over financial                    reporting. |
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| Dated:                August 14, 2008 | By:                    | /s/                Zishen                Wu |
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|                                  | Zishen                Wu         |
|                                  | President                and CEO |

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