Portable fire-starting device

A portable fire-starting device, comprising:

• at least two inner housing plates, the inner housing plates being provided with ventilation holes, all inner housing plates enclosing to form an inner housing configured to accommodate a combustible material;
• at least two outer housing plates, one of the outer housing plates being provided with an air inlet hole, all outer housing plates enclosing to form an outer housing, the outer housing being disposed surrounding the inner housing;
• a connection assembly, the connection assembly being connected to each of the inner housing plates and each of the outer housing plates, so that an air flow channel is formed between the inner housing and the outer housing, the air flow channel being communicated with the ventilation holes and the air inlet hole;
• wherein the connection assembly comprises a connection plate and at least two fixing members, the connection plate is connected to each of the inner housing plates and each of the outer housing plates, the connection plate is abutted against an outer wall of the inner housing plate and an inner wall of the outer housing plate, and the fixing members are clamped between an inner wall of the inner housing plate and an outer wall of the outer housing plate.