The invention discloses a multifunctional pencil box and relates to stationery. The multifunctional pencil box comprises a box cover and a box body, wherein the box cover and the box body are connected through connecting pieces; a box opening button for opening the pencil box is arranged at the front end of the box cover; the four corners of each of the box cover and the box body are set into circular arc chamfers capable of preventing stabbing injury; elastic patches capable of preventing the corners of the pencil box from being broken due to falling of the pencil box are arranged at the circular arc chamfers of the four corners of each of the box cover and the box. By means of LED lamps arranged on the pencil box, the pencil box can be used as an illuminating light source when lamplightis needed; data such as temperature, humidity, air quality and the like in a classroom can be monitored in real time by a temperature sensor, a humidity sensor and a sensor for monitoring the air quality of the classroom and is displayed on a display screen; by means of an electronic timer, students can accurately master time and allocate exam time even without mobile phones or watches when the students are in examinations or do timing exercises.