The former Real Madrid manager says that the Chelsea striker must work hard to be assured of a place in his squad and remains coy on the chances of Roberto Soldado being called up
Torres has found the net just five times since his big-money move from Liverpool to Chelsea in January 2011, leading to speculation that the 27-year-old could lose his place in the world champions' squad.
However, Del Bosque has maintained that an upturn in form would see the former Atletico Madrid striker be sure of a role in Spain's defense of the European Championship.
"I have more or less the entire list in my head. It will be normal, with no big surprises. We will consider the past, but we cannot ignore today," Del Bosque told Canal+.
"Fernando Torres knows what he has to do to be in the squad."
Del Bosque then spoke about David Villa's recovery from the broken leg the 30-year-old sustained in Barcelona's Club World Cup campaign.
"We must all have patience with him [Villa] - he deserves it. He has been our most secure goalscorer."
However, when asked about the chances of Valencia striker Roberto Soldado making the cut, Del Bosque simply replied: "I cannot fit everyone in the squad."
Torres scored the winning goal in Spain's Euro 2008 final victory over Germany.