A method of producing a hollow fiber membrane includes discharging a
polyvinylidene fluoride solution comprising a polyvinylidene fluoride
resin and a poor solvent at a temperature above a phase separation
temperature into a cooling bath at a temperature below the phase
separation temperature to coagulate the polyvinylidene fluoride resin.
The hollow fiber membrane comprises a polyvinylidene fluoride resin
having spherical structures that have an average diameter in the range of
0.3 to 30 .mu.m.