The invention discloses a dustproof surrounding-air-inlet Bunsen burner. The dustproof surrounding-air-inlet Bunsen burner is characterized by comprising a lamp holder, a fuel gas input pipe, a valve,an air flow rate adjusting sleeve, a modulator tube, an adjustable lamp cap, an adjustable nut, a hopper saddle and a dustproof cover. The fuel gas input pipe is screwed into the side face of the upper side of the lamp holder. The valve is installed on the fuel gas input pipe. The air flow rate adjusting sleeve is screwed into the lower portion of the modulator tube. The bottom of the adjustablelamp cap and the bottom of the adjustable nut are both screwed into the upper portion of the modulator tube. A through hole is formed in the middle of the hopper saddle. The hopper saddle sleeves theouter side of the modulator tube through the through hole in the middle. The dustproof cover is installed on the upper face of the hopper saddle. By means of the dustproof surrounding-air-inlet Bunsenburner, the air inlet amount can be adjusted, it is ensured that air and fuel gas are sufficiently mixed in the modulator tube, the lamp cap can be adjusted according to actual demands, the length ofcombusting flames is adjusted, the dustproof cover has windproof, dustproof and high-temperature resistant performance, and the dustproof surrounding-air-inlet Bunsen burner is high in stability, safe, environmentally friendly and suitable for use as a high-temperature heating tool in experiments or other product production processes.