POWER OF ATTORNEY

    Know all by these presents, that the undersigned hereby constitutes and
appoints each of Kevin Haas and Vinay Shah of Aravive, Inc. (the "Company"),
signing individually, the undersigned's true and lawful attorney-in fact and
agent to:

    (1) prepare, execute on behalf of the undersigned, and submit to the U.S.
        Securities and Exchange Commission (the "SEC") any documents necessary
        or advisable to obtain EDGAR access codes or make any updates to the
        undersigned's EDGAR access codes once obtained, enabling the undersigned
        to make electronic filings of reports with the SEC;

    (2) execute for and on behalf of the undersigned, an officer, director or
        holder of 10% of more of a registered class of securities of the
        Company, Forms 3, 4 and 5 in accordance with Section 16(a) of the
        Securities Exchange Act of 1934, as amended (the "Exchange Act") and the
        rules thereunder;

    (3) do and perform any and all acts for and on behalf of the undersigned
        that may be necessary or desirable to complete and execute such Form 3,
        4 or 5, complete and execute any amendment or amendments thereto, and
        timely file such forms or amendments with the SEC and any stock exchange
        or similar authority; and

    (4) take any other action of any nature whatsoever in connection with the
        foregoing which, in the opinion of such attorney-in-fact, may be of
        benefit, in the best interest of, or legally required by, the
        undersigned, it being understood that the documents executed by such
        attorney-in-fact on behalf of the undersigned pursuant to this Power of
        Attorney shall be in such form and shall contain such terms and
        conditions as such attorney-in-fact may approve in such attorney-in-
        fact's discretion.

    The undersigned hereby grants to such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorney-in-fact, in
serving in such capacity at the request of the undersigned, is not assuming, nor
is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Exchange Act.

        This Power of Attorney shall remain in full force and effect until the
earliest to occur of (a) the undersigned is no longer required to file Forms 3,
4 and 5 with respect to the undersigned's holdings of and transactions in
securities issued by the Company, (b) revocation by the undersigned in a signed
writing delivered to the foregoing attorney-in-fact or (c) until such attorney-
in-fact shall no longer be employed by the Company, as applicable.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 3rd day of March, 2019.

                                        /s/ Gail McIntyre
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                                        Gail McIntyre