Provided are: a polymer film characterized in that the average film thickness T 0 along a straight line D passing through the center of gravity of a two-dimensional projection such that the area of the polymer film is maximized, satisfies equation (a), the average value L of distances 1 from the center of gravity to edges satisfies equation (b), the Young's modulus E satisfies equation (c), and the thickness deviation ” defined by equation (d) satisfies equation (e)； and a dispersion liquid and an agglomerate using the same. (a) 10 nm ‰¤ T 0 ‰¤ 1000 nm, (b) 0.1 µm ‰¤ L ‰¤ 500 µm, (c) 0.01 GPa ‰¤ E ‰¤ 4.3 GPa, (d) ” = 1 - T 1 /T 2 , (e) 0.346E x 10 -9 - 1.499 <； ” <； -0.073E x 10 -9 + 0.316. According to the present invention, a polymer film which is easy to handle and has excellent followability, coatability, adhesiveness, and adherence with respect to organ tissues； and a dispersion liquid and an agglomerate using the same can be provided.
