In Iran's criminal codes, the title of goodwill and its role in the deterioration of criminal responsibility has not been given special attention and has not been addressed in the form of an independent element, but it is possible to measure some of it in the rule of Ehsan, which in Article 510 of the Criminal Code. U Approved in 1392, it appears independently. By contrast, in Indian law, the legislator, both in the Penal Code and in the general law of the country, takes a different look at the definition of goodwill and states that the basis of goodwill is to censure criminal responsibility, to be careful and to take caution, However, according to Indian general regulations, only honest belief is sufficient to eliminate criminal responsibility, whether it is precision, attention or negligence. From the precision and reflection on the various materials of the Iranian and Indian penal codes, it was concluded that goodwill according to its functional scope is considered as the commonality between the dominant causes of the elimination of responsibility and the causes of crime.