A lot of small rice-like bumps on the face are considered to be caused by fat grains, acne and eczema. 1. fat grain: mostly occurring in the face, mostly because of excessive oil secretion or the use of too greasy skin care products, so that the accumulation of oil in the skin, the accumulation of white particles ultimately formed, that is, similar to the small grain of rice pimples. 2. Acne: the formation of acne and a variety of factors, such as when the sebum secretion is too much, the follicle sebaceous gland ducts keratinization, resulting in poor drainage ducts, sebum stagnation in the skin and the formation of acne, from the outside looking in, it is the face of a lot of small grains of rice like a pimple. If the hair follicles are infected by bacteria, acne can be further formed. 3. Eczema: The typical manifestation of eczema is the appearance of millet-sized red papules, papules or small blisters, accompanied by itching. If it occurs on the face, it can be manifested as a lot of small rice-like bumps on the face. It is recommended that when you have a lot of small rice-like bumps on your face, you should consult a hospital in a timely manner and be treated by a professional doctor.