Inductively coupled plasma optical emission spectroscopy is one of the most essential techniques for quantitatively detecting elements′ concentrations in labs. The applications based on this technology have been extended from metallurgy, mining to such domains as life sciences, environmental reserving, organism analyzing. Nowadays, ICP-OES researchers pay more attentions to the details amelioration, the cases in point are laser ablation, the minimization of sample injecting apparatus, mixed-gas plasma, bottom-view, achromatic devices, etc.