An object is to provide a porous film which has excellent removal performance of viruses and the like and a long lifetime, a virus removal method which uses the porous film as a filter, a method for producing a virus-free product which uses the porous film as a filter and a device which includes the porous film as a filter. In a porous film including a structure of spherical pores communicating with each other, an interconnected pore is an opening of the spherical pores communicating with each other, and the pore diameter of the interconnected pore is set to 10 nm or more and 35 nm or less, and the number of spherical pores which are present between one surface of the porous film and the other surface thereof and are 50 nm or more and 200 nm or less is set to 200 or more and 1000 or less.