A fuel cell module comprising: a fuel cell stack formed by stacking a plurality of fuel cells, and providing a first end plate and a second end plate at both ends of the fuel cells in a stacking direction, the fuel cells each formed by stacking an electrolyte electrode assembly and a separator in the stacking direction, the electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between the anode and the cathode; and a load applying mechanism for applying a load to the fuel cell stack in the stacking direction, characterised in that the load applying mechanism includes: a first tightening load applying unit for applying a first tightening load to a gas sealing portion (32, 62) of the fuel cell stack; a second tightening load applying unit for applying a second tightening load to the electrolyte electrode assembly, the second tightening load being smaller than the first tightening load; and a third tightening load applying unit provided at the first tightening load applying unit for applying a third tightening load to the gas sealing portions in the stacking direction, separately from the first tightening load applying unit, and wherein the first tightening load applying unit includes: a first bolt screwed into the second end plate, and extending through the fuel cell stack toward the first end plate; a first plate member engaged with the first bolt; and a first spring member interposed between the first plate member and a support plate for applying a load in the stacking direction to the gas sealing portion, and the second tightening load applying unit includes: a second bolt screwed into the second end plate; a second plate member engaged with the second bolt; and a second spring member interposed between the second plate member and the fuel cell stack for applying a load to the electrolyte electrode assembly in the stacking direction, wherein the third tightening load applying unit includes a third bolt screwed into the second end plate; and a presser member externally fitted to the third bolt, and interposed between the first plate member and the second plate member for applying a load to the first plate member in the stacking direction. a fuel cell stack formed by stacking a plurality of fuel cells, and providing a first end plate and a second end plate at both ends of the fuel cells in a stacking direction, the fuel cells each formed by stacking an electrolyte electrode assembly and a separator in the stacking direction, the electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between the anode and the cathode; and a load applying mechanism for applying a load to the fuel cell stack in the stacking direction, characterised in that the load applying mechanism includes: a first tightening load applying unit for applying a first tightening load to a gas sealing portion (32, 62) of the fuel cell stack; a second tightening load applying unit for applying a second tightening load to the electrolyte electrode assembly, the second tightening load being smaller than the first tightening load; and a third tightening load applying unit provided at the first tightening load applying unit for applying a third tightening load to the gas sealing portions in the stacking direction, separately from the first tightening load applying unit, and wherein the first tightening load applying unit includes: a first bolt screwed into the second end plate, and extending through the fuel cell stack toward the first end plate; a first plate member engaged with the first bolt; and a first spring member interposed between the first plate member and a support plate for applying a load in the stacking direction to the gas sealing portion, and a first bolt screwed into the second end plate, and extending through the fuel cell stack toward the first end plate; a first plate member engaged with the first bolt; and a first spring member interposed between the first plate member and a support plate for applying a load in the stacking direction to the gas sealing portion, and the second tightening load applying unit includes: a second bolt screwed into the second end plate; a second plate member engaged with the second bolt; and a second spring member interposed between the second plate member and the fuel cell stack for applying a load to the electrolyte electrode assembly in the stacking direction, wherein the third tightening load applying unit includes a third bolt screwed into the second end plate; and a presser member externally fitted to the third bolt, and interposed between the first plate member and the second plate member for applying a load to the first plate member in the stacking direction. a second bolt screwed into the second end plate; a second plate member engaged with the second bolt; and a second spring member interposed between the second plate member and the fuel cell stack for applying a load to the electrolyte electrode assembly in the stacking direction, wherein the third tightening load applying unit includes a third bolt screwed into the second end plate; and a presser member externally fitted to the third bolt, and interposed between the first plate member and the second plate member for applying a load to the first plate member in the stacking direction.