The fallout rates of radionuclides, 7Be and 22Na, in rain water collected at Tokyo were measured monthly during the period from February 1975 to February 1977, using a low-background dual Nal(Tl) coincidence gamma ray spectrometer. It is found that the contribution from nuclear weapon tests to these nuclides is negligibly small. Therefore these activities (7Be and 22Na) are attributed to the cosmic ray produced nuclides in the atmosphere. The average fallout rates of 7Be and 22Na measured at ground level of Tokyo are 118¿13 and (1.66¿0.24)¿10-2pCi/m2/d, respectively. These values are in agreement with values estimated by Lal and Peters, within the experimental error. Using the observed fallout rate of 22Na, the global average fallout rate of 26Al produced in the atmosphere is estimated to be 5.4¿10-8pCi/m2/d, which is higher by about a factor of ten than the influx rate of cosmic dust bearing 26Al estimated by Reyss et al. Therefore most of the 26Al activity contained in the terrestrial sample seems to be originated from the 26Al produced by cosmic rays in the atmosphere.