In the mass spectrometry, during the last ten years or so, the great developments of the instrumental and measuring techniques have been carried out. And, according to the developments, the applications areas have been rapidly extended in the various parts of fundamental and applied science, especially in nuclear physics, chemical physics, solid physics, cosmo-science, organic chemistry, etc. Here, the general views on instrumental development and a few topics on mass spectroscopical researches are briefly described.
