The invention discloses a vehicular multifunctional traveling storage bag. The vehicular multifunctional traveling storage bag comprises handles, a storage bag body, a reflecting plate, a reflecting waistcoat, a fixing
barrel, a safe hammer, a push plate, a first spring, a first folding plate, a buckle box, a buckle, a second folding plate, a fixing block, a second spring, a fixing groove, a thirdspring, a fixing latch, a second fixing rod and a fifth spring. The vehicular multifunctional traveling storage bag is provided with the fixing
barrel, the safe hammer is placed in the fixing
barrel,after an accident happens, the safe hammer can be taken out in time, and can be used for breaking a vehicle window in time, thus, a user can save himself in time, the first folding plate and the second folding plate are arranged on the bottom of the storage bag, when articles are placed, the first folding plate and the second folding plate extend, the space of the storage bag is expanded, after the articles are taken out, the first folding plate and the second folding plate contract under the effect of the third spring, and a proper accommodating space is provided.