Provided are: a polymer film characterized in that the average film thickness T0 along a straight line D passing through the center of gravity of a two-dimensional maximum-area projection satisfies equation (a), the average value L of distances 1 from the center of gravity to edges satisfies equation (b), the Youngs modulus E satisfies equation (c), and the thickness deviation ? defined by equation (d) satisfies equation (e) and a liquid dispersion and an agglomerate using the same. (a) 10 nm ? T0 ? 1000 nm, (b)0.1 µm ? L ? 500 µm, (c) 0.01 GPa ? E ? 4.3 GPa, (d) ?=1-T1/T2, (e) 0.346E×10-9-1.499 < ? < -0.073E×10-9+0.316. According to the present invention, a polymer film which is easy to handle and has excellent compatibility, coatability, adhesiveness, and adhesion with respect to organ tissues and a liquid dispersion and an agglomerate using the same can be provided.
