Born in City of San Marino, Venturini obtained the Diploma of laboratory technician at the University of Urbino in 1984, and is an employee of the Institute for Social Security.

He has been a member of the Sammarinese Christian Democratic Party since 1986 and held the position of Deputy Secretary from 1997 to April 2002 and subsequently from March 2007 to December 2008.

He held the position of Captain Regent of the Republic of San Marino in the semester 1 October 1996 – 1 April 1997.

From 5 December 2012, for the XXVIII Legislature, he was appointed Secretary of State for Internal Affairs, Public Administration, Justice and Relations with the Castle Councils.

[2] He once again held the position of Captain Regent of the Republic of San Marino in the semester 1 April – 1 October 2021.