This paper describes how to design turbo-pump inducers for a micro satellite launcher. The authors organized NASA's design criteria (NASA SP series) and some current design studies. To evaluate the design procedures and the design criteria, we designed inducers and conducted performance tests using a cavitation tunnel. As a result of the test, it was confirmed that we successfully developed high performance inducers that caused no severe cavitation instability phenomena, at the design flow coefficients of 0.09 and 0.1.