Italy refused to sign. How soon can I apply for a Schengen visa again?

Italy refused to sign. If you still want to apply for an Italian Schengen visa, you can apply again in the short term. If you want to apply for a Schengen visa from other countries, you have to wait until three months later, otherwise it is very likely to be rejected because it will be considered by other countries as having an immigration tendency.

Schengen visa: refers to the visa issued according to the Schengen agreement. The agreement was named after it was signed in Schengen, Luxembourg, and stipulated the single visa policy of member countries. According to this agreement, any visa issued by Schengen member countries is also considered valid in all other member countries, and no visa application is required. The country that implements this agreement is the so-called "Schengen country".