The study employed clinical interview to investigate 60 yound children's (5-year old) conceptions about electric circuit and levers. The major findings were as follows: (1) most children don't have the loop view of electric circuit, they hold the view of “chashing currents model”- the currents flow towards bulb simultaneously from battery so as to bring about much more electricity and speed; (2) most children hold alternative frameworks about the location, direction and speed of the movement of two levels. Based on the above findings, the suggestions are: (1) increase the amount of research on scientific concepts development and on early Science teaching; (2) scaffold children's learning by guiding the skill of observing and thinking.