The invention relates to a nine block type skeleton beam at the front of a car floor. The nine block type skeleton beam comprises four groups of stringer members, namely a first stringer member, a second stringer member, a third stringer member and a fourth stringer member, and also comprises four groups of beam members, namely a first beam member, a second beam member, a third beam member and a fourth beam member. The nine block type skeleton beam is characterized in that the four groups of stringer members and the four groups of beam members are intersected and connected, to form the nine block type skeleton beam comprising a first block, a second block, a third block, a fourth block, a fifth block, a sixth block, a seventh block, an eighth block and a ninth block, and a car front floor is connected onto the nine block type skeleton beam. The nine block type skeleton beam can improve the structural strength of the car body front floor, fully effectively absorbs and disperses collision energy, meets the requirements of the safety collision regulations, and can achieve a good passenger protection effect.