The Victorian Government is moving to ban smoking in children's playgrounds.

The law will be changed so people will not be able to smoke in playgrounds, at swimming pools, children's sports grounds or skate parks.

Offenders face a fine of $140.

Health Minister David Davis says the Government wants to reduce children's exposure to smoke.

"Children ought to be able to be in a playground, be at a skate park, be at a children's sporting event without encountering smoke, or the role model impacts of those who smoke," he said.

The Government will not say when it might ban smoking in outdoor dining and drinking areas.