The invention relates to the field of LED lamps, in particular to a heat dissipation type LED lamp with a large-angle lighting function. The heat dissipation type LED lamp with the large-angle lighting function comprises a lamp tube aluminum profile and a light permeable cover, wherein the light permeable cover is installed on the lamp tube aluminum profile; the lamp tube aluminum profile is provided with a lamp holder substrate; a circuit board and a plurality of LED lamp beads are arranged on the lamp holder substrate; a cavity containing water is formed in the inner side of the light permeable cover, an air blower is arranged on one side of the cavity, the cavity is provided with an air blowing opening and a one-way valve, and the air blowing opening is connected with the air blower; and the air blower is provided with an air cooler. According to the heat dissipation type LED lamp with the large-angle lighting function, through repeated refraction of light, the illumination area of the lamp is increased, the heat dissipation efficiency is high, and the illumination intensity varies.