Disclosed is a fan support free of assembly and disassembly tools. The fan support includes: left-right symmetrical slots, provided on a server case base and respectively located on both sides of a fan; an elastic arm assembly, including two symmetrical side arms and an elastic member, bottoms of the two side arms are snap-fitted in the two slots, and tops of the two side arms are connected by the elastic member; a fixing assembly, provided with a limiting structure that fits with a fan housing, and a sliding groove; a pressing assembly, provided with a deformable region, and a sliding structure that fits with the sliding groove, the deformable region is configured to drive the sliding structure to move outwards, the sliding structure pushes the elastic member to stretch and deform to drive the two side arms to disengage from the two slots.