The invention relates to an LED fluorescent lamp with an all-plastic housing, neutral legs, a built-in bidirectional convection radiator and a wide-angle light emitting function. The LED fluorescent lamp comprises the radiator. The radiator is arranged in a tubular diffuser and comprises a central radiating ridge, the central radiating ridge is distributed along the length direction of the tubular diffuser and is positioned in the center of the radiator, and two flow guide cavities are respectively formed in spaces on two sides of the central radiating ridge; lamp cap covers are arranged at two ends of the tubular diffuser, air inlets are formed in the bottoms of the various lamp cap covers, and air outlets are formed in positions adjacent to the tops of the various lamp cap covers; a left air guide sheet is arranged in the lamp cap cover at the left end of the tubular diffuser and is used for guiding cold air into the flow guide cavity on a side of the central radiating ridge and guiding airflow out of the air outlet in the lamp cap cover at the left end of the tubular diffuser, the cold air flows into the lamp cap cover at the left end of the tubular diffuser from the air inlet in the lamp cap cover, and the airflow is exhausted from the flow guide cavity on the other side of the central radiating ridge; a right air guide sheet is arranged in the lamp cap cover at the right end of the tubular diffuser and is used for guiding cold air into the flow guide cavity on one side of the central radiating ridge and guiding airflow out of the air outlet in the lamp cap cover at the right end of the tubular diffuser, the cold air flows into the lamp cap cover at the right end of the tubular diffuser from the air inlet in the lamp cap cover, and the airflow is exhausted from the flow guide cavity on the other side of the central radiating ridge.