  Inspired by the rich structure of covariant string field theory, we propose a
minimal gauge invariant action for general massive integer spin n field. The
action consists of four totally symmetric tensor fields of order respectively
n, n-1, n-2 and n-3, and is invariant under the gauge transformation
represented by two also totally symmetric fields of order n-1 and n-2. This
action exactly has the same gauge structure as for the string field theory and
we discuss general covariant gauge fixing procedure using the knowledge of
string field theory. We explicitly construct the corresponding gauge fixed
action for each of general covariant gauge fixing conditions.
