A photography device includes a lens body, an inner housing, a light-transmissive cover, and an airtight member. The inner housing has an annular wall portion. The annular wall portion surrounds the lens body separately. The light-transmissive cover covers the lens body and the inner housing. The airtight member is disposed on the inner housing and includes a first annular abutting portion and a second annular abutting portion. The first annular abutting portion is airtightly abutted between the inner housing and the light-transmissive cover. The second annular abutting portion is airtightly abutted between the inner housing and the lens body.