The invention provides a light tube and a light tube for charging and relates to the technical field of an illuminating lamp. The light tube comprises a lamp tube, a first support, a second support, a switch and a base. The first support and the second support are arranged at the two ends of the base correspondingly. The lamp tube is arranged between the first support and the second support. The switch is electrically connected with the lamp tube. The base abuts against the lamp tube. A heat dissipating layer is arranged between the lamp tube and the base, and thus, heat generated by the lamp tube can be dissipated and then dissipated completely through the base. Moreover, a protecting layer used for protecting eyes is arranged outside the lamp tube, lamp light becomes softer, while illumination is ensured, the eyes are protected better, and the technical problems that in the prior art, the heating amount of the light tube is large, heat dissipation of the light tube is poor, shortening of the service life of the light tube is caused, the eyes of people are influenced by the lamp light, and as a result, vision is impaired are solved. The service life of the light tube is prolonged, the eyes of people are protected, and the light tube is more practical.