Disclosed is a safe and energy-saving mosquito killing lamp, comprising a lamp holder (1), a shell (2) connected to the lamp holder (1), and a connecting base (3) connected to the shell (2). A first cavity is formed between the shell (2) and the connecting base (3). The connecting base (3) comprises a tapered portion extending into the first cavity, and a lamp post (11) arranged on the tapered portion. A mosquito trapping light source (15) is arranged on an outer surface of the lamp post (11). A mosquito killer (12) is arranged on the periphery of the mosquito trapping light source (15). The mosquito killer (12) is fixed inside the shell (2). The mosquito killer (12) comprises a positive electric net (1201) and a negative electric net (1202). The positive electric net (1201) and the negative electric net (1202) encircle each other and are not connected to each other. By means of arranging two electric nets, the safety performance of the mosquito killing lamp is improved. Since people cannot touch the inner el
