The invention relates to a multifunctional street lamp. The multifunctional street lamp comprises a lamp post, environment monitoring instruments, a wireless AP connector and a control box, wherein the environment monitoring instruments, the wireless AP connector and the control box are arranged on the lamp post; a modulator-demodulator, an interface adaptor and a concentrator are arranged in the control box; the environment monitoring instruments include one or more of a temperature sensor, a humidity sensor, a wind speed and direction sensor, a light sensor, a noise sensor, a PM2.5 sensor and a rain sensor; the environment monitoring instruments are sequentially connected with the concentrator, the interface adaptor and the modulator-demodulator; and the wireless AP connector is connected with the modulator-demodulator. According to the multifunctional street lamp, multiple types of environment data can be monitored and a wireless network access service can be provided by arranging the environment monitoring instruments and the wireless AP connector, the street lamp is made to have multiple functions accordingly, and the defect of simplex illumination function of an existing street lamp is overcome, and the utilization ratio of the street lamp is increased.