In this article, the non-destructive testing of alnico alloys was carried out by various methods. Paper provides and researches about non-destructive testing (NDT) methods. The research was divided into surface and volumetric test material. The paper covers the review on the capabilities of NDT applications such as visual testing (VT), penetrate testing (PT), ultrasonic testing (UT), radiographic testing (RT) with respect to advantages and disadvantages of these methods.