The invention relates to a die capable of being adjusted finely. According to the die capable of being adjusted finely, an upper die base is internally provided with a first containing cavity for installing an upper die core, and the first containing cavity is internally provided with a limiting plate for limiting the upper die core from moving, so that the upper die base is internally provided with different types of upper die cores; a lower die base is internally provided with a second containing cavity for installing a lower die core, the lower die core extends to the positioning side of a first limiting block in the second containing cavity through the upper die core, and position adjusting and positioning of the other side are conducted through a first cam and a first stirring wheel, so that the low die base is internally provided with different types of lower die cores; thus, the position of the lower die core is adjusted finely, the misplacing problem of the upper die core and the lower die core is solved, the alignment precision of the upper die core and the lower die core is improved, and the precision of injected molded workpieces is improved; and the upper die base and the lower die base can adapt to the different types of upper die cores and the different types of lower die cores, and the applicability is improved.