Exhibit 99.1350CERT


     Certification Pursuant to Rule 30a-2(b) under the 1940 Act and
                  Section 906 of the Sarbanes Oxley Act


Pursuant to 18 U.S.C.  1350, the undersigned officer of BlackRock MuniYield
Florida Fund (the "Registrant"), hereby certifies, to the best of his
knowledge, that the Registrant's Report on Form N-CSR for the period ended
October 31, 2007, (the "Report") fully complies with the requirements of
Section 13(a) of the Securities Exchange Act of 1934, as amended, and that the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Registrant.


Date: December 19, 2007


/s/ Donald C. Burke
-------------------
Donald C. Burke, Chief Executive Officer (principal executive officer) of
BlackRock MuniYield Florida Fund


Pursuant to 18 U.S.C.  1350, the undersigned officer of BlackRock MuniYield
Florida Fund (the "Registrant"), hereby certifies, to the best of his
knowledge, that the Registrant's Report on Form N-CSR for the period ended
October 31, 2007, (the "Report") fully complies with the requirements of
Section 13(a) of the Securities Exchange Act of 1934, as amended, and that the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Registrant.


Date: December 19, 2007


/s/ Neal J. Andrews
--------------------
Neal J. Andrews, Chief Financial Officer (principal financial officer) of
BlackRock MuniYield Florida Fund



This certification is being furnished pursuant to Rule 30a-2(b) under the
Investment Company Act of 1940, as amended, and 18 U.S.C. Section 1350 and is
not being filed as part of the Form N-CSR with the Securities and Exchange
Commission.