Security system, security shooting module, and manufacturing method thereof

The invention provides a security system, a security shooting module, and a manufacturing method thereof. The security shooting module comprises an optical lens, a photosensitive element, a filtering element, and a lens structure, the lens structure further comprises a lens seat and a shell, the optical lens is arranged on the lens seat and positioned on a photosensitive path of the photosensitive element, the shell and the lens seat are integrally formed, the filtering element is arranged on the shell in an operable manner, and the filtering element can filter light from the optical lens to the security shooting module. The lens seat and the shell are integrally formed so that machining errors and assembling errors between the lens seat and the shell in the prior art can be eliminated, and the imaging quality of the security shooting module can be improved.