Branching ratios of α decay to members of the ground state rotational band and excited 0 + states of even-even nuclei are calculated in the framework of the generalized liquid drop model (GLDM) by taking into account the angular momentum of the α particle and the excitation probability of the daughter nucleus. The calculation covers isotopic chains from Hg to Fm in the mass regions 180 < A < 202 and A 224. The calculated branching ratios of the α transitions are in good agreement with the experimental data and some useful predictions are provided for future experiments.