Soccer shoes can be worn for Little League baseball, but baseball shoes CANNOT be worn for soccer.
If you're going to buy your child one pair of shoes for both sports, buy soccer shoes. In our youth soccer league, referees are instructed to check the cleat pattern of each player's shoes before a game. If a player is wearing baseball shoes, he/she won't be permitted to play.
What is the difference between baseball cleats and soccer cleats?
Baseball cleats have an extra toe stud that is dangerous during soccer tackles. The toe stud can be cut off to modify a baseball cleat for soccer.
The sole design of a soccer cleat differs from a baseball cleat in that it eliminates the midsole to bring the player closer to the ground. Removing the midsole helps make soccer cleats somewhat lighter than baseball cleats. The material of a soccer cleat also tends to be more flexible than the baseball cleat, which allows the player to feel the ball. The material on the top of the cleat is also thicker to withstand repetitive kicking. The ankle design of a baseball cleat often features ankle support to help baseball players as they run and slide. Soccer cleats do not have this support because they are designed to allow the players freedom in their foot movement.
*reference material sourced from ask.com and livestrong.com*